Heavy Duty Bolt Cutter, S42 Model, 44 in, 11 16 in Soft, 9 16 in Medium, 1 2 in Hard Cutting Capacities no checkout and leaves 3X less lint and leaves 3X less lint than shop towels lightweight fiberglass handles Maximum hardness of material to be cut: Brinell 455 Rockwell C48 Lockplate keeps jaws from loosening Toggle joints turn 50 lbs hand pressure to 4000 lbs cutting pressure controlled cutting Hardened alloy steel jaws are designed and manufactured to assure the longest possible blade life One step internal cam mechanism provides the quickest and simplest way to keep the cutting blades precisely aligned Handles and grips designed to allow greater mechanical advantage for crisp