Eyech 3pcs 2 Pcs 1/4 Inch Hex Shank Self-locking Drill Bit Holder Drill Bit Extension Screwdriver Bit Holder Extension Rod Quick Release Chuck Adapter Connector Power Drill Tool 50mm LengthSpecifications:Type: Drill Bit Holder ExtensionMaterial: stainless steelHex Shank Diameter: 1/4inch Hex Socket Diameter: 1/4 inchLength: 50mmDesign: non-magneticFeature:-- High hardness, non-slip, large torque, long life and durable.-- 1/4 Inch Hex shank suitable for the sleeve and the joint, chuck, prolonging the connecting rod conversion uses.-- Quick Release Locking sleeve, allows you to quickly install, lock and unlock the bit easily, greatly improve work efficiency.-- Used for extending all kinds of single-head screwdriver bits, drill, batch head, screwdriver head.--More convenient one-hand operation, press down can release the ejection bit, realizing quick replacement in one second--Shaft holds bit securely, great for working with hard to reach screwsThe package include:3pc Drill Bit Holder