The SAWZALL™ TORCH™ 230mm 10 Pack with bonus TORCH™ with NITRUS CARBIDE™ 230mm blade provides value with a bonus Carbide blade. The TORCH™ Bi-Metal blades with the Double Duty Upgrade feature a tooth form optimised for the longest life and maximum durability. TOUGH NECK™ is engineered to protect against tang breakage and delivers the strongest SAWZALL™ blade tang on the market. GRID IRON™ features a stamped honeycomb pattern throughout the body of the blade that greatly increases the rigidity of the blade, making it the stiffest metal cutting SAWZALL™ blade on the market. Includes a Bonus NITRUS CARBIDE™ 230mm Blade that 5X the life of existing carbide teeth reciprocating saw blades. Constructed with 25% more Nitrus Carbide per tooth for the fastest cutting and longest life in extreme metals.