Design Feature---Ergonomic design handle is very comfortable to hold and operate. The blade is on the same line as the handle, which can offers better control and downward blade pressure. High Quality---Made of high quality aluminum and steel, sturdy and uneasy to rust. 1.5-20mm/0.06-0.79inch adjustable guide groove width. Design Feature---Ergonomic design handle is very comfortable to hold and operate. The blade is on the same line as the handle, which can offers better control and downward blade pressure. Wide Usage---Professional tools for leathercraft, such as belt,wallet,handbag,leather pockect punch,table mat etc. After Sales Service---100% Satisfaction Guarantee. If for any reason you're not 100% Satisfied, please let us know and our customer service team will do our best to help you.