ALR- Clamping Tombstone ALR- Clamping Tombstone Inquiry Back Prev Next Product Description Product Specification 1. The maximum clamping force for ALR-6500 is 4500KN.2. Rigid and tensile ductile iron FCD-60(80,000PSI) vise body. Slide surface flame hardened to HS65° to maintain the accuracy. Out of stock., contact us