---
product_id: 553512511
title: "SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment"
brand: "speedwox"
price: "B/.100"
currency: PAB
in_stock: true
url: https://www.desertcart.com.pa/products/553512511-speedwox-10-pcs-m4-20mm-threading-rotating-knob-adjustable-thumb
store_origin: PA
region: Panama
---

# M4 x 20mm precision threading Spring-loaded adjustable lever Electro-galvanized anti-rust finish SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment

**Brand:** speedwox
**Price:** B/.100
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your gear with SPEEDWOX – where precision meets effortless control!

## Quick Answers

- **What is this?** SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment by speedwox
- **How much does it cost?** B/.100 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/553512511-speedwox-10-pcs-m4-20mm-threading-rotating-knob-adjustable-thumb)

## Best For

- speedwox enthusiasts

## Why This Product

- Trusted speedwox brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durability Meets Style:** Crafted from premium aluminum alloy with electro-galvanized coating for long-lasting rust resistance.
- • **Ergonomic Spring-Loaded Lever:** Adjustable thumb lever springs back for comfortable, secure tightening every time.
- • **Effortless Tool-Free Adjustment:** Single-wing knob design lets you install or remove screws in seconds—no tools needed.
- • **Precision Fit for Versatile Use:** M4 x 20mm threading ensures compatibility with a wide range of electronic and furniture equipment.
- • **Bulk Pack for Professional Projects:** 10-piece set keeps you ready for multiple installations or repairs—never run out mid-task.

## Overview

The SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob set features durable aluminum alloy knobs with electro-galvanized iron screws. Designed for easy, tool-free installation, each spring-loaded thumb lever screw offers precise M4 x 20mm threading, ideal for electronic, photographic, and furniture applications. This bulk pack ensures you stay equipped for professional-grade adjustments with rust-resistant, ergonomic hardware.

## Description

SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment

## Features

- 【WHAT YOU GET】 10 x M4*20 Black adjustable thumb lever screw.
- 【EASY TO USE】 Knob Screw with single wing is easy to install or remove without any tools, convenivent and effortless. Widely used in furniture decoration, photographic equipment, electronic equipment and so on.
- 【DESIGN】 Adjustable knob screw is spring loaded which can be pulled out or turned to a more friendly position after being tightened.
- 【MATERIAL】 The screw handle is made of high quality aluminum alloy, the screw is made of iron, surface with electro-galvanized treatment, more durable and anti-rust.
- 【DIMENSION】 Model: M4*20. Screw length: 20mm/0.79". Lever width: 26.3mm/1.04".

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SPEEDWOX |
| Part number | RASBM420-948 |
| Item Weight | 68 g |
| Manufacturer reference | RASBM420-948 |
| Size | M4*20 |
| Color | Black |
| Finish | Electro-galvanized |
| Material | Aluminum |
| Shape | Round |
| Number Of Pieces | 10 |
| Head Style | Button |
| Cutting Diameter | 4 Millimeters |
| Measurement System | Imperial |
| Special Features | Durable, Easy to Install |
| Batteries Included? | No |
| Batteries Required? | No |
| Item diameter | 4 Millimeters |

## Product Details

- **Material:** Aluminum
- **Head style:** Button
- **Exterior finish:** Aluminium, Iron
- **Thread size:** M4
- **Metal type:** Aluminum

## Images

![SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment - Image 1](https://m.media-amazon.com/images/I/61kYoqdYIgL.jpg)
![SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment - Image 2](https://m.media-amazon.com/images/I/61SRL59CvVL.jpg)
![SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment - Image 3](https://m.media-amazon.com/images/I/71XGs0s2JhL.jpg)
![SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment - Image 4](https://m.media-amazon.com/images/I/71-UkZQjuDL.jpg)
![SPEEDWOX 10 Pcs M4 20mm Threading Rotating Knob, Adjustable Thumb Lever Screw, Thumb Screw with Single Wing, Red Aluminum Alloy for Electronic Equipment - Image 5](https://m.media-amazon.com/images/I/61lt0Ng2e0L.jpg)

## Available Options

This product comes in different **Color, Size** options.

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**Shop now:** [https://www.desertcart.com.pa/products/553512511-speedwox-10-pcs-m4-20mm-threading-rotating-knob-adjustable-thumb](https://www.desertcart.com.pa/products/553512511-speedwox-10-pcs-m4-20mm-threading-rotating-knob-adjustable-thumb)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-03-04*