Stahlwille 11180020 412-1 Bit Holder, with External hex size 10 mm for use in tools with a 10 mm hexagon socket or double hexagon socket (e.g. FLEXI double-jointed wrench, T-jointed wrench, double socket wrench, ratchet ring wrench, etc.). Hexagon socket with ring compression spring. Bits are easy to insert, snap securely into place and are easy to pull out again. Stahlwille knows no compromises. All the products made by this company are manufactured at three locations in Germany under the most stringent quality control conditions. The latest manufacturing methods coupled with the use of the highest-grade materials ensure the closest tolerances are adhered to. And last but not least, it is the proximity to the customer and understanding of production processes and requirements that generate the innovation that the market needs. Made in Germany. High-grade materials and ergonomic design that redefines standards: Stahlwille's Bit Holders unite these positive qualities in a manner which is close to perfect. The result is a long-life, ergonomically designed tool providing strain-free working combined with maximum force transmission – even with greasy hands.