John George - Impact Professional Screw ZYP 4.0x25mm (Tub of 1,700no).
Ideal for use with Impact Drivers!Pozi recessed head for industry standard fitRibbed double countersunk for a flush finishHardened steel for high torque loadsMilling shank helps clear hole in fixturePart threaded from 40mm to eliminate jacking of fixtureDouble type 17 point for immediate start in all timbersZinc and yellow passivated for corrosion resistance3 x driver bits included in each tub