Nylon/7 series
Key Benefits:

REPLACEMENT THOREX AND THORACE FACES
7 Series Nylon & Plastic Spare Faces
WHITE - HARD NYLON - Shore hardness D 61-65
The best all-purpose face. For light and heavy assembly work.
BROWN - TOUGH POLYURETHANE - Shore hardness D 58-62
Tough and abrasive resistant. Ideal for striking sharp surfaces including cutting forms, steel rule die assembly.
GREY - SOFT PVC - Shore hardness A63-73
Will not mar finished surfaces. Ideal for flat pack furniture assembly, woodworking.
RED - MEDIUM HARD PLASTIC - Shore hardness D 45-55
More suited for light hammering applications and the assembly of precision parts.
YELLOW - EXTRA HARD - Rockwell hardness R103
Extra hard faces for specialist applications only e.g. setting copper armatures.