DUAONETS Hex Shank Screwdriver Quick Release Extension Holder Bit Set 3Pcs

Hex Shank: Approx. 1/4 (6.35mm) Material: Stainless Steel + - Steel 1 x 100 mm/ 3.94 inch Extension Drill Bit Holder 1 x 150 mm/ 5.91 inch Extension Drill Bit Holder Length: Approx. 60mm/2.36 100mm/3.94 150mm/5.91 1 x 60 mm/ 2.36 inch Extension Drill Bit Holder Fast fastening; Greatly improve work efficiency Suitable for drill screwdriver batch head and other to transfer and high quality Color: As picture shows Interface has a locking mechanism built-in automatically up batch head Can extend all kinds of screwdriver bits screwdriver head conversion uses