This drill bit extension set is an essential tool for both diy enthusiasts and professionals. Crafted with metal materials and precision engineering, durability and consistent performance for your drilling requirements. Come with wrench, allowing for convenient to install and use. Features -Color:Silver -Material:Metal -Size:29.80X1.20X1.20cm/11.71X0.47X0.47in -Size:5.00X1.70X0.20cm/1.97X0.67X0.08in -Size:15.80X1.25X1.25cm/6.21X0.49X0.49in -Drill bit extension kit is made from metal for enhanced durability and resistance to rust. -Quick changing design, allows the drill bit extension rod efficient swapping and use. -The extension rods and wrench kit is designed to provide versatility in usage. -Precision machining ensures a secure and stable connection, gives you maximum control and accuracy when drilling and driving. -Lightweight and compact design enables easy portability and convenient storage. Package list: 1 x Drill Extension Rod (150MM) 1 x Drill Extension Rod (300MM) 2 x Wrenches