PREMIUM QUALITY - The extension kits are made of Material which is durable and reliable.FLEXIBLE - The drill extension shaft is flexible which offers you accessibility to the narrow space. 11.6 inches shaft can be used for most of the application. Screw Extend Tool: 5.5 inchesSAFTY - The tools sets protects your hands while working.CONNECTORS SIZE - 1/4 inches hexagon (3 PCS) and 1/4 inches square (3PCS)colour:Silver + black + blue + redMaterial:Metal + plasticPackage Contents:3 * 1/4inch Drill Extension Kit3 * 1/4inch Socket Screw DriverOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.