Quantity: 3 pieces Specifications: 1/4 (6.35 mm) × 60 mm, 1/4 (6.35 mm) × 100 mm, 1/4 (6.35 mm) × 150 mm Ideal for drill and impact drivers as well as for your daily maintenance. Suitable for electric screwdrivers, impact wrenches, and extension rods that fit securely into the screwdriver. Applicable to: pneumatic air pack, electric hand drill, rechargeable drill, electric screwdriver, etc. Uses: Used for screwdrivers and other tools to extend the connection in harsh working environments and play a multiplying role. This extension rod can be used with socket connecting rods, etc. ! Ideal for professionals and DIY enthusiasts.