Is this made in China?

Thank you for your question. The Bosch MS4091 is manufactured in China. Robert Bosch Tool Corporation utilizes a global manufacturing strategy, which incorporates a global network of suppliers with our worldwide manufacturing locations in countries such as Germany, Mexico, Switzerland, China and the United States. Our manufacturing facilities around the globe are all owned and operated by the Bosch Group and maintain the highest quality standards. You can be assured that whatever country your Bosch product was made in, it will be made with the quality you would expect from Bosch.

Can this be used with a bosch hd3 183-02 hammer drill/driver?

Thank you for your question. The MS4091 bit set is compatible with any 3 jawed chuck drill/driver like HDS183-02 hammer drill/driver. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

What are the dimensions of the case when closed?

Thank you for your question. The MS4091 is 320mm x 231mm x 71mm when closed. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499)

Does bosch ms4091 91 piece set work with black+decker ldx120c 20v drill/driver ?

Thank you for your question. The MS4091 is a set of drilling and driving bits with rounded shank. If your tool accepts round shank bits, then it will work. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from M-F 7a-7p CST.

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🛠️ Unlock your inner craftsman with Bosch’s ultimate 91-piece drill & drive set!

EVERYDAY READY - Perfect for pros and DIYers tackling tasks from home repairs to workshop projects.
TITANIUM TOUGHNESS - Durable titanium-coated bits reduce wear and extend tool life.
ULTIMATE PORTABILITY - Rugged, organized case keeps your tools ready wherever you go.
ALL IN ONE POWERHOUSE - 91 precision bits covering wood, metal, masonry & more for every project.
DAMAGE RESISTANT DESIGN - Driver bits engineered to minimize screw head damage and maximize grip.

The BOSCHProfessional 91-Piece Drilling and Driving Mixed Set MS4091 offers a comprehensive collection of high-speed steel bits with titanium finish, designed for versatile drilling and fastening across wood, metal, and masonry. Packaged in a durable, portable case, this set features precision-engineered driver bits that reduce screw damage and provide superior grip, making it an essential toolkit for professionals and serious DIYers alike.

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Manufacturer	Bosch
Part number	MS4091
Item Weight	680 g
Item model number	MS4091
Size	91-Piece Set
Color	Multi
Style	91pc
Finish	Titanium
Material	High Speed Steel (HSS)
Pattern	Solid
Shape	Rectangular
Power source type	Hand_powered
Item Package Quantity	1
Number Of Pieces	91
Cutting Diameter	1/16", 7/64", 1/8", 9/64", 5/32", 3/16", 1/4", 5/16", 3/8" Inches
Measurement System	Inch
Compatible Fastener Range	1 inches
Included components	91 pc. Drilling and Driving Mixed Bit Set
Batteries Included?	No
Batteries Required?	No
Item diameter	1/16", 7/64", 1/8", 9/64", 5/32", 3/16", 1/4", 5/16", 3/8" Inches

BOSCHProfessional 91-Piece Drilling and Driving Mixed Set MS4091

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