Compatible tools: THP-SP (inner diameter 0.4 - 0.6 inches (10 - 15 mm)), THP-P (inner diameter 0.2 - 0.6 inches (4 - 15 mm)), THP-HP (inner diameter 0.3 - 0.6 inches (8 - 15 mm)); For repairing and reinforcing holes in belts, curtains, blue sheets, aprons and bags. Rust resistant, double-sided grommets are made of a softer material compared to brass and stainless steel, so they are excellent for continuous work such as pliers.