IRWIN Record Cam Adjusted High Tensile Bolt Cutters (BC Series) with jaws specially heat treated for cutting very hard materials up to Brinell 500, (Rockwell C52, 110 tons/square in). Special design for quick simple adjustment, yet still offering heavy-duty cutting performance and hard working reliability. The lighter handle construction is ideal for difficult or uncomfortable situations.IRWIN Record BC918H Cam Adjusted High Tensile Bolt Cutter 460mm (18 in).Overall Length: 460mm (18 in).Max Cutting Capacity: 6.4mm (1/4 in).Additional Information:Size (mm): 460Size (in): 18Cutting Capacity (mm): 6.4