Boker Plus 01BO206 Double Lock Trapper Knife with 3 3/8 in. High Carbon Stainless Steel Blade Double back lock mechanism High carbon stainless steel blades Jigged brown bone handle with scored stainless steel bolsters and classic shield Blade length: 3 3/8 in. Closed length: 4  in. Limited Lifetime Warranty Stainless steel bolsters High carbon stainless steel blades Scored bolsters Double back lock mechanism