C k precision screwdriver slotted ph set of 4 ck tools t4884x ergonomically designed handles with hollow rotating cap for ease of use and precise control blades manufactured from premium quality chrome vanadium molybdenum steel for strength tips accurately machined for the ultimate screw fit contains slotted 1 8x60 3x100 4x150 ph0x60ck tools t4884x precision screwdriver slotted ph set of 4