【Drill Bit Extension】Length: 60mm; Hex Shank Diameter: 1/4 inch (6.35mm); Hex Socket Diameter: 1/4 inch (6.35mm).

【Sturdy & Stable】Made of premium stainless steel for high strength and hardness, sturdy for long time.

【Easy to Use】This drill bit holder extension is non-magnetic! It has a built-in stability lock and high-efficiency spring. Excellent concentricity can greatly improve work efficiency.

【Quick Release Bit Holder】Interface has a locking mechanism for one-handed quick release. Press down can release the ejection bit, realizing quick replacement in one second.

【Widely Application】Hex shank can fit power drills chuck, 1/4-inch impact drivers and hand-held drivers. Used for screwdriver bits, drill, batch head and other tools for the conversion.