The bell-shape and hex insert allow the bit to hold the bit securely in place for quicker installations.Designed and engined for long life and good durability for operating.1/4-Iinch Shank fits most powered corded or cordless drills.Anti rust, anti slip, high occlusion, tight and flexible.It is applicable for installing in those hexagon tools, such as pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, manual screwdriver, etc
