General description: The leather hole punch is an indispensable tool for all your DIY projects. Made of stainless steel, it is robust and durable, with a V-shaped opening design that facilitates punching various materials such as leather, plastic, and paper. Thanks to its innovative design, it enables precise and clean punches. Technical specifications: Material: Stainless steel; Adjustable distance: 7 to 21 mm; Available hole sizes: 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm. Installation: Select the desired punch needle specification. Squeeze the handle and insert it into the punch needle cover. Lock it by rotating the adjustment switch's cutting surface. Adjust the lower mold's setting screw with the hex key. Align the punch needle with the corresponding lower mold hole. Adjust the limiting ruler to the desired distance for precise punching. Applications: This hole punch is ideal for: Punching leather, belts, and plastic. Punching A4 paper and cardboard. Creating round holes in various materials such as canvas and rubber. Other information: Spring-loaded design for one-handed operation. Non-slip handle to reduce wrist pressure and fatigue.