IRWIN Tools Folding Utility Knife (1874804) Compact, durable body design includes wire stripper, cast finger grooves and trigger-grip handle for greater control. BladeLock technology delivers unparalleled safety, allowing blade change only when release button is engaged and blade holder is in open position. All-metal construction stands up to heavy use and abuse. The 16-degree cutting angle provides ultimate comfort and control. A liner lock prevents the knife from closing while in use for safe, one-handed operation. Backed by the IRWIN lifetime guarantee.