Material - Our wire grommets are made of flexible and durable rubber material, strong elasticity, flame retardant, aging resistance, heat resistance, cold resistance, corrosion resistance, folding resistance, strong insulation protection, and a good helper to seal wall and furniture openings. Design - Our double-sided rubber grommets have a frosted surface design. Compared with smooth surfaces, the frosted surface reduces the adhesion area of fingerprints, making it difficult for these marks to form obvious marks on the surface, and improving dirt resistance. Easy to Use -  Installing these rubber gaskets is a breeze. You just need to measure the panel hole size, choose the appropriate grommet, and then insert the cable, rubber cable hole plug can firmly fix the cable and make your home, office, garage, or workshop organized. Application - These rubber wire grommets help protect circuits, wires, and cables from rough corners or edges by turning rough edges and uneven holes into smooth, insulated holes, helping us to tidy and organize wiring in various places such as computers, speakers, furniture, water pipes, and pipelines. Material: Rubber Color: Black Inside Diameter: 40mm(1.57inch) Drill Hole: 45mm(1.77inch) Outside Diameter: 57mm(2.24inch) Groove Width: 3mm(0.12inch) Overall Thickness:12mm(0.47inch) Package Contents: 8Pcs x Rubber Grommets