Thor 916SPF Spare Super Plastics Face 50mm THO916SPF Thor Replacement white super plastic split head faces are special shaped and manufactured from ultra-high molecular weight polythene which will not fracture, splinter or delaminate on use. The Ultra-high molecular weight Polythene when fitted into Malleable iron heads provide high impact, durability and high abrasive resistance.These faces can be used as an alternative to Rawhide. For use with size 4 Thor split head hammers .Face diameter 50m (2 in) THO916SPF