These Tool grommets for automotive, marine and RV wiring jobs. They are designed to protect wires, cables hoses etc, from the sheet metal edges. These black rubber grommets are organized by hole size in a convenient PVC snap-shut cases that allows for easy transportation and storage. All pieces have recessed rim for easy mourning. Features - Color: Black. - Material: Rubber. - The sealing ring is made of rubber. - Variety of thickness and size are , very convenient to use. - , mineral oil-resisting, . - Suitable for Cars, marine and RV wiring jobs, faucets hoses and protects wiring in firewalls and junctions,Furniture to protect wires from computers and equipment in offices or home and more. Set includes rubber grommets (inside diameter x outside diameter): 15 . 1/8" x 1/4" 7 . 9/32" x 1/2" 6 . 3/8" x 1/2" 3 . 5/16" x 9/16" 4 . 7/16" x 3/4" 2 . 3/4" x 15/16" 10 . 7/32" x 5/16" 3 . 1/2" x 19/32" 5 . 3/8" x 1/2" 3 . 3/8" /16" 3 . 5/8" x 31/32" 20 . 9/32" 20 . 3/8" 10 . 1/2 5 . 5/8" 4 . 3/4" 3 . 7/8" 2 . 1" Package list: 125 x Sealing Grommet Rubber Ring Assortment Set Hydraulic Plumbing Gasket Seal Kit Wire Ring Electrical Gasket Tools Washers Seals Set - Black