CLIP NAME MODIFIER FOR STANDARD RAIL TYPE FIXING BASE WELDABLE UPPER PART MATERIAL CAST IRON ASTM A536 654512 LOWER PART MATERIAL FORGED STEEL SAE-1022 TOTAL SIDE ADJUSTMENT 10 MM TOTAL HEIGHT 15 MM NOSE MATERIAL VULCANIZED SYNTHETIC RUBBER NOSE HEIGHT 12 MM ADDITIONAL REQUIREMENTS SEE NOTE TRADE REFERENCE GANTREX-RAILOK W20 NOTE: – FOR RAIL A75.