Features: Applied with durable wear-resisitent High-purity steel metal and of a long lifespan.Cast iron construction and special anti-friction anti-skid rubber material, durable and easy holding.Nomally No Need To Pre-punch. If the material is too hard to punch,it can be pre-punch to try.Punching and grommet setting are performed at the same time, without the need for extra tools or steps to pre-punch.Manual eyelet puncher in light weight is very easy to take and convenient to use because of its redirecting transmission. Warmly Notice: Be sure to use grommet with washer together.The 6mm grommet is very small, please use a caliper to confirm the required size. Package Included: 1x Portable 6mm(1/4 inch) Manual Grommet Tool1 Bag of 500pcs Grommets & Washers1x hole puncher1x white backer block. Grommet Tool Instruction: It is recommended to practice punching on some old newspapers or cardboard boxes in advance, so that you can better have a command of the strength required for punching before formal punch work.Do not put the washer upside down.Do no wash it by water. Please use a wet cloth to clean the tool if needed. Grommet Press is applicable for kinds of vinyl, Fabric, Tarps, Leather, Denim, Belts, Shoes, banners, Tarpaulin, Carport tarp, Awning, Clothes, Curtain, Yard signs, Boxes, Wrap material, Cover material, Sunshades, Inket cloth, Cardboard, Ponchos, Posters, Woven poly tarp, Sun umbrella, Bags, Decorative flags, Fabric, vinyl billboard, projector screen, etc.Not Applicable for Terry cloth, Towels, parachute material.