--- product_id: 48524924 title: "Silverline Monobloc Back Nut Tap Spanner 3pce 9 x 11 & 12 x 13mm (719819)" brand: "silverline" price: "B/.46" currency: PAB in_stock: true reviews_count: 13 category: "Silverline" url: https://www.desertcart.com.pa/products/48524924-silverline-monobloc-back-nut-tap-spanner-3pce-9-x-11 store_origin: PA region: Panama --- # Long reach for tight spots Dual-size precision fit Zinc-plated corrosion resistance Silverline Monobloc Back Nut Tap Spanner 3pce 9 x 11 & 12 x 13mm (719819) **Brand:** silverline **Price:** B/.46 **Availability:** ✅ In Stock ## Summary > 🔧 Unlock precision and durability in every twist! ## Quick Answers - **What is this?** Silverline Monobloc Back Nut Tap Spanner 3pce 9 x 11 & 12 x 13mm (719819) by silverline - **How much does it cost?** B/.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/48524924-silverline-monobloc-back-nut-tap-spanner-3pce-9-x-11) ## Best For - silverline enthusiasts ## Why This Product - Trusted silverline brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Extended Reach Design:** Access those hard-to-reach monobloc back nuts without the struggle. - • **Lightweight & Compact:** At just 170g and slim dimensions, it’s your go-to tool for on-the-go fixes. - • **Precision Dual-Size Fit:** Effortlessly tackles 9x11mm & 12x13mm fasteners with one sleek tool. - • **Classic Alloy Steel Durability:** Engineered from premium alloy steel for strength that professionals trust. - • **Corrosion-Resistant Zinc Plating:** Built to last—resists rust and wear for enduring performance. ## Overview The Silverline Monobloc Back Nut Tap Spanner 3-piece set features corrosion-resistant zinc-plated alloy steel construction, designed specifically for 9x11mm and 12x13mm fasteners. Its long reach enables easy access in restricted areas, making it an essential, lightweight tool (170g) for professional plumbing tasks. ## Description From the manufacturer About Us With over 5000 products manufactured across the UK, Europe, United States and Asia, it’s important for us to work hard to reduce the environmental impact throughout our chain of operations. Our sourcing team works closely with our factories to find ways to reduce environmental costs associated with bringing you quality products. With our own dedicated product compliance team of more than 50 people we inspect every production run to ensure products meet with our specification and your satisfaction. The compliance team are also responsible for our factory audit programme involving the comprehensive review of working conditions and ethical business practice at every factory manufacturing our products. Silverline 719819 Monobloc Back Nut Tap Spanner 3pce 9 x 11 and 12 x 13 mm Corrosion-resistant, zinc-plated steel with easy-grip matt finish. For fitting back nuts to monobloc taps in restricted access areas. Matt finish for grip. Review: Do what they say. - Good and as described. Tightened up my sink tap easily. Good value for money. Review: Perfect! - For something so simple and so ridiculously cheap these are an absolute godsend. As many other people have said if you’re fitting a monobloc tap get some of these. Even if you’re not fitting a monobloc tap get a set of these and then you’ll have them when you need to change your taps. They make life so much easier than any other mechanism for getting to and tightening the 12mm nut that holds the tap on. They’re also about 180mm long which makes it much easier to do the job. ## Features - Warning:Only for domestic use - Corrosion-resistant, zinc-plated steel - Long reach for access in restricted areas - For 9 x 11mm & 12 x 13mm fasteners - For fitting back nuts to monobloc taps ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0014BOAIW | | Best Sellers Rank | 341,166 in DIY & Tools ( See Top 100 in DIY & Tools ) 126 in Box Spanners | | Brand | Silverline | | Colour | Silver | | Customer Reviews | 4.5 out of 5 stars 1,225 Reviews | | Finish | Zinc-plated | | Global Trade Identification Number | 05024763029806 | | Head Style | Box End | | Included Components | 1 x Monobloc back nut tap spanner 12/13mm, 1 x Monobloc back nut tap spanner 9/11mm | | Item Length | 185 Millimetres | | Item Package Quantity | 1 | | Item Type Name | Silverline 719819 Monobloc Back Nut Tap Spanner, 9/11 and 12/13 mm | | Item Weight | 0.17 Kilograms | | Item length | 185 Millimetres | | Item package quantity | 1 | | Item weight | 0.17 Kilograms | | Jaw Capacity | 13 Millimetres | | Manufacturer | SLTL4 | | Material | Zinc-plated Steel | | Measurement Standard | Metric | | Model Number | 719819 | | Operation Mode | Mechanical | | Part Number | 719819 | | Set Name | 3-piece set. | | Unit Count | 1.0 count | ## Product Details - **Brand:** Silverline - **Colour:** Silver - **Item length:** 185 Millimetres - **Item weight:** 0.17 Kilograms - **Material:** Zinc-plated Steel ## Images ![Silverline Monobloc Back Nut Tap Spanner 3pce 9 x 11 & 12 x 13mm (719819) - Image 1](https://m.media-amazon.com/images/I/51DwufWCDEL.jpg) ![Silverline Monobloc Back Nut Tap Spanner 3pce 9 x 11 & 12 x 13mm (719819) - Image 2](https://m.media-amazon.com/images/I/51AHLsPZDKL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Do what they say. *by A***R on 30 January 2026* Good and as described. Tightened up my sink tap easily. Good value for money. ### ⭐⭐⭐⭐⭐ Perfect! *by P***K on 11 July 2018* For something so simple and so ridiculously cheap these are an absolute godsend. As many other people have said if you’re fitting a monobloc tap get some of these. Even if you’re not fitting a monobloc tap get a set of these and then you’ll have them when you need to change your taps. They make life so much easier than any other mechanism for getting to and tightening the 12mm nut that holds the tap on. They’re also about 180mm long which makes it much easier to do the job. ### ⭐⭐⭐⭐ Does the job. Don't use the long lever to tighten. You'll ruin things. *by M***G on 22 October 2020* I used a big nail instead of the leaver. The supplied lever just get in the way, and is so long that it invites ruining your threads. ## Frequently Bought Together - Silverline Monobloc Back Nut Tap Spanner 3pce 9 x 11 & 12 x 13mm (719819) - GROHE 30189000 | Ambi Kitchen Tap --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.pa/products/48524924-silverline-monobloc-back-nut-tap-spanner-3pce-9-x-11](https://www.desertcart.com.pa/products/48524924-silverline-monobloc-back-nut-tap-spanner-3pce-9-x-11) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-06-02*