Bosch Jonnesway 40-Piece Screwdriver Bit Set with S2 Steel Bits and Metal Case, S29H4140S

Stripped screws, worn-out tips, and the frustration of digging through a drawer full of mismatched bits can bring any repair job to a halt. The Bosch Jonnesway 40-Piece Screwdriver Bit Set (S29H4140S) eliminates this chaos by delivering a comprehensive, organized collection of professional-grade bits in a rugged metal case. Whether you're working under the hood, repairing industrial equipment, or tackling home maintenance, this set ensures you have the right tool at hand, ready to perform.

Who is it for

This bit set is built for automotive technicians, mechanics, industrial maintenance professionals, and serious DIY enthusiasts who demand reliability and versatility. It's equally suited for general repair tasks around the workshop, garage, or job site. If you work with fasteners on vehicles, machinery, or appliances, this set provides the essential drive types and sizes you need.

Main features

• Complete 40-piece assortment covering Hex, Torx, and Spline (M) profiles in both 30mm and 75mm lengths.
• Manufactured from S2 high-grade alloy steel for exceptional hardness and durability.
• Phosphate coated finish offers corrosion resistance and extends bit life.
• Includes two bit holders: 1/2" drive and 3/8" drive, both with 10mm hex shank receptacles.
• Sturdy metal storage case keeps bits organized and protected.
• 10mm hex shank ensures compatibility with standard bit holders and adapters.

Specifications

• Brand: Bosch
• Model: S29H4140S
• MPN: S29H4140S
• EAN: 4719152141405
• Product Type: Screwdriver Bit Set
• Number of Pieces: 40
• Bit Material: S2 High-Grade Alloy Steel
• Shank Size: 10mm Hex
• Bit Lengths: 30mm and 75mm
• Hex Bit Sizes (30mm & 75mm): H4, H5, H6, H7, H8, H10, H12
• Torx Bit Sizes (30mm & 75mm): T20, T25, T30, T40, T45, T50, T55
• Spline Bit Sizes (30mm & 75mm): M5, M6, M8, M10, M12
• Bit Holders Included: 1/2" Dr. x 10mm, 3/8" Dr. x 10mm
• Case Material: Metal
• Finish: Phosphate Coated
• Application: Automotive, Mechanical, Industrial, General Repair

Tips

For best results, always select the bit that fits the fastener head snugly to avoid cam-out and damage. Use the appropriate bit holder for your ratchet or driver, and store bits in the metal case when not in use to maintain their condition. The 30mm bits are ideal for tight spaces, while the 75mm bits provide extra reach.