Features 1、This drill bit extension is made from quality high carbon steel material, which is sturdy and durable. 2、With accurate finish and fine polishing, this drill bit extension can provide you with better use experience. 3、The hex shank dynamic trough design can reduce the skid, which is more stable and efficient. 4、With 1/4 inch hex shank, this drill bit extension easy to install, giving you more convenience. 5、Wide application, this drill bit extension is suitable for 1/4" spade drill, screw bits and auger bits. Specification Item Type: Drill Bit Extension Material: High Carbon Steel Hex Handle Specifications: 1/4in Size: Approx. 150mm / 5.9in, 300mm / 11.81in Purpose: It Can Be Connected with 1/4 Shank Spade Drills, Auger Drill, Screw Bits Applicable Scenarios: Mechanical Engineering, Mechanical Equipment, Woodworking Package List 2 x Drill Bit Extension 2 x Hex Shank