Developed over 32 years of traversing hundred's of kilometres of New Zealand forests and waterways . In my 7 year's in the army and hunting for Red dear since 1991 . These knives and leather sheaths were developed and refined . Stainless Steel blades and Copper bolster's to inhibit rust . Only the hardest hardwoods for handles . Full depth 4mm Ox hide embossed sheaths for full protection against loss . Full Harden and Temper process on all blades and Sub-zero Quench of 440 C and 12 C 27 Stainless Steels