Universal application screws. 4CUT point ensures exact screw positioning, reduces splitting and reduces the screwing-in torque required. Countersinks easily. Quick and secure fastening. Mills into the wood - stops on metal. Pozi bit recess. No pre-drilling required (wood-dependent). Spax Yellox Pozi Screw 4.0 x 30mm (200 Pack) in Gold. Box 200 4.0mm x 30mm The advantages and properties of the internationally exclusive SPAX YELLOX surface at a glance: YELLOX achieves corrosion resistance. This pack of Pozidriv drive recess countersunk flat head wood screws are constructed from a durable hard synthetic coating, 30mm in length and come fully threaded. They have ground serrations at beginning of thread. They're ideal for a range of DIY applications.