Fangrui Product Details Superior Craftsmanship: Constructed From High-quality Materials, Each Closed Rubber Grommet Offers Exceptional Flexibility, Resilience Against Aging, And Resistance To Folding. Designed To Provide Robust Insulation, These Grommets Are Dust-proof, Flame-retardant, And Effectively Prevent Metal Friction Damage To Wired And Other Materials. Comprehensive Kit Details: The Assortment Includes Various Sizes To Suit Multiple Applications: M7.14 (58pcs), M9.53 (44pcs), M12.07 (30pcs), M15.88 (20pcs), M19.05 (16pcs), M22.23 (10pcs), And M25.4 (10pcs), Each Designed To Meet Different Needs For Sealing Or Isolating Wires Through Panel Entries. User-friendly Installation: Rubber Grommets Simplify Installation By Eliminating The Need For A Lock Nut On The Opposite Side. Place The Grommet On One Side Only; It Seals Upon Installation And Opens Only When The Central Membrane Is Punctured, Ensuring A Secure And Stable Setup. Versatile Usage: These Rubber Grommets Are Indispensable In Protecting Wires And Cables From Met