Description: Material: Hight Speed Steel. Solid and strong. Completely polished prongs/tooth and handle makes it more smooth to punch through and pull out on leather. Prong spacing for choose:3mm and 4mm spacing available. Features: 1---3mm and 4mm spacing are available. Each spacing we provide 1/2/4/6 prongs which are polished for a greater performance in leather lacing and stitching. 2---With polished prong and handle, the chisel can pierce through and be pulled more smooth than common one and maximally protect the shape of holes on leather to help you stitch a more beautiful line. 3---3mm spacing: 6.5mm prong length; 0.5mm prong width. Threads in 0.35-0.55mm dia is recommended.Over all length:98mm. 4---4mm spacing:8.5mm prong length; 1.2mm prong width. Threads in 0.45-0.77mm dia is recommended. Over all length:98mm. Tip: 1.It is better to use the tool with soft pad to protect sharp chise teeth as it is expendable 2.Must be perpendicular to the perforated leather,and don't beat it with heavy hammer, you can use plastic hammer or nylon hammer 3.Use the tool with soft cushion to protect the cut tip, such as outrageous board or open plate 4.When not in use, can be coated with a layer of oil between the cut, put protective sleeve to do with the maintenance 5.Because the tip of the tooth is thin and sharp,so you don't need to tap it with large strength, especially the 1 prong and 2 prong. NOTE: There are some anti-rust oil on the hole punch, As the carbon steel, please know that there may be some small flaws,like rust,cut marks...etc, but it doesn't affect the use. About the handle of each piece pricking iron, please understand that the height and width is difference,but it doesn't affect the use. Buy with Confidence: If you are not satisfied with the product, please contact us in time, and we will give you a satisfactory reply. Smooth Handle: It is comfortable to hold, and a sharp rhombus tooth is helpful to punch quickly and effortlessly. Prong Spacing to Choice: 3mm & 4mm spacing. 3mm spacing: 6.5mm prong length; 0.5mm prong width. Threads in 0.35-0.55mm dia is recommended. 4mm spacing:8.5mm prong length; 1.2mm prong width. Threads in 0.45-0.77mm dia is recommended. Completely Polished: Completely polished prongs/tooth and handle make it more smooth to punch through and pull out on the leather. Material: Hight Speed Steel. Solid and strong, with long-lasting sharpness and durability (4mm one set:1+2+4+6 tooth).Blade Material: Carbon Steel, Steel, Iron. Handle Material: Plastic, Steel. Size: 4 mm spacing. Brand: WUTA. Date First Available: February 4, 2017. Item Weight: 3.2 ounces. Is Discontinued By Manufacturer: No. Best Sellers Rank: #23,425 in Arts, Crafts & Sewing. Customer Reviews: 4.4 out of 5 stars 55 ratings 4.4 out of 5 stars. : B01N7ZQE85. Package Dimensions: 5.3 x 2.1 x 0.9 inches.