VEVOR Grommet Tool Kit 1/4" 5/16" 3/8" 900 PCS Grommets Eyelet Tool Kit, with Eyelets and Washers, Manual Grommet Press Pliers, Hole Punch Tools, Blocks, for Leather, Tarps, Shoes, Crafts, FabricSimple to UseStrong Magnetic GripEfficient & EffortlessEasy ReplacementWide ApplicationsDetailed User ManualDie Size: 1/4" (6 mm), 5/16" (8 mm), 3/8" (10 mm),Grommet Height: 1/4" / 6 mm,Suitable Thickness: ≤0.12"/3 mm,Item Model Number: 6MMWQP,Number of Grommets: 900 pcs (300 for 6mm, 300 for 8mm, 300 for 10mm),Number of Replaceable Dies: 3 Sets (Interchangeable),Main Material: Steel