WUZHOU PH2 ScrewdriverThese Drywall Screwdriver Bits are made of high-strength S2 alloy steel, these screwdriver bits are very durable. Heat treated to resist breakage and wear, impact resistant tool steel for maximum durability hex shank for use in bit holders. Protect the surfaceDepth stop design can limit screw penetration and damage to the board, easier to install drywall screws. Using these screwdriver bits, the head of the drywall screw will stretch and dimple the surface of the drywall, but will not break it. Magnetic headThese drywall bit holders are magnetic head, so they can be firmly fixed on the screw. Strong magnetic, it can easily suck the screws when using. Retaining RingThe ph2 screwdriver bits have a collar that acts as a stopper, preventing the bit from following the screw head into the drywall - once the collar comes into contact with the masonry sheathing, the bit cannot continue. Delivery Quantity: 1set, Package Contents: Only the above package contents, excluding other products. Size: length 65mm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Color: Mix Color (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)