Versatile Use: This hole punch has 6 holes in different sizes: round hole: 3.5 mm, 4 mm, 4.5 mm; rectangular hole: 6 x 4 mm, 7 x 3 mm; oval hole: 6 x 4.5 mm. It meets all your needs for making leather rings, belts, watch straps, fabrics, shoes, handbags, stamps, cardboard, plastic, pet collars, ID cards, clothing, etc. Ergonomic and Comfortable Design: This professional hole punch features a double-lever mechanism, saving you significant effort. The handle is padded, non-slip, and ergonomically designed, making it very suitable for long-term repetitive work without causing hand pain or blisters. High Quality and Safety: This durable hole punch is made of high-quality gold-plated steel. The metal surface is spray-painted to prevent oxidation. The brass buffer is thickened for safety. Perfect Match: The hole punch includes a leather punch, 1 free spare plate, a screwdriver, and a ruler. With a stainless steel ruler, you can accurately measure your parts, and with a screwdriver, you can change spare plates and tighten the screws on the belt. User-Friendly: measure the desired position → quickly mark with the grinding rod → turn counter-clockwise to the correct hole size → place a piece of thick cardboard over the brass pad → tighten the handle and turn left and right to punch the hole → grind the grinding rod and remove dirt.