ITEM NAME:10x25mm PH2 Dimpler Drilling Bits For Drywall Plasterboard Vanadium Screws FT Description 100% New and High Quality!!! Colour: as shown in the picture Material: Shock-resistant tool steel Size: 25mm Features: PH2 bits for drywall screws Automatically sets screws to proper depth in drywall Shock-resistant tool steel Heat-treated to resist breakage These are designed to be used with any power drill or cordless drill Includes depth stop to limit screw penetration & damage to board Installs drywall screws easily.PH2 bits for drywall screws. Automatically sets screws to proper depth in drywall. Installs drywall screws easily. Colour: as shown in the picture. These are designed to be used with any power drill or cordless drill.