High quality: this drill bit extension set is made of industrial grade heavy-duty material, durable, withstanding high pressureStrong magnetism: locking mechanism and strong built-in magnetism make it easy to pop up batch head automatically, fast and quick release ensured.Adjustable hex bit holder:the red sleeve can be adjusted and suitable for single head (NOTE:Not suitable for double head bits).Great for working with the area hard to reach, quick change will greatly improve work efficiency.Wide applications: our drill bit extender is suitable for nut, batch head, pneumatic screwdriver, electric screwdriver, pneumatic drill, manual screwdriver and screwdriver head; Please note that only the bottom of the hole part is magnetic, and the hex shank is not magneticSize:2.4 inch/ 60 mm, 4 inch/ 100 mm and 6 inch/ 150 mmcolor:Red+blackMaterial:steelPackage Contents:6 x Black drill bit extenders6 x Red drill bit extensionsOnly the above package content, other products are not included.Note: Light 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.