Our SHOCKWAVE Impact Duty 3in. Screw-Holding Bit Holder securely holds screws for easy One-Handed Fastening. The bit holder directly engages screws when the outer sleeve is slid up, leading to fewer dropped screws on the job site. The screw is held to the bit holder by a ring magnet on the front of the sleeve, allowing for the easiest driving. The optimized SHOCKZONE shank absorbs peak torque and prevents breaking.