Item Type: Leather Swivel Knife Material: M2 Steel + Aluminium Alloy Function: Carve the knife line on the leather to complete the leather carving work. Hardness: 62-64 Adjustment Range: Approx. 0 ~ 15mm / 0 ~ 0.59in Package List 1 x Leather Swivel Knife 1 x Hex Wrench 1Flexible Works: Rotating the nut to adjust the height from 0 to 15mm, which will meet your various working needs. 2Incisive Blade: made of premium M2 steel material, the double edged blade is very incisive, suitable for nicking. 3Simple Cutting: Comes with high hardness about 62 to 64, the sturdy cutter head is very durable for long using. 4Easy Operation: Aluminium alloy handle enables a light overall weight, bringing more convenience to the operation. 5More Convenience: Light weight and compact size is very easy to carry and store. An excellent gift for craftsman.