Tandy Leather Al Stohlman Brand Round Leathercraft Knife. Tandy Leather Al Stohlman Brand Round Knife is a versatile tool for cutting parts of the product, thinning (scrubbing) of leather; Blade 4-3 / 8 "is made of stainless steel and polished to a mirror shine, which helps it to easily slide on thick skin; Comfortable handle to give you a simple and safe grip so you can work faster with full control; Professional knife for cutting and scribing leather; The shape of the blade allows you to cut the skin in the usual way, and "roll".