Can be used for drilling multiple purposes such as siding walls, gypsum boards, FRP and veneer boards, PVC boards, composite materials, etc. Pocket shape considering the efficiency of cutting cuts can also be used to drill thick boards and deep holes smoothly. Blade diameter: 1.5 inches (38 mm) Total length: 7.5 inches (191 mm) Compatible models: electric drills, vibration drilling (rotating mode), lightweight hammer drill (rotating mode). Mode: Blade thickness: 0.8 inches (7 2. Effective length: 6.7 inches (170 mm); Material: Blade part: Carbide chip; Compatible material: Soft siding board, wood, PVC, FRP, gypsum board, plywood; Replacement blade core drill; UR25/55FST, UR25/55FSD); Body part: Carbon steel; Blade: Carbide chip