SBR rubber delivers flexible, resilient cushioning with strong abrasion resistance, creating a snug protective pass through that reduces vibration and edge wear for wiring in automotive, electrical, and shop projects. Panel Hole Size: 0.4375" (11.0mm), ID (center wiring hole): 0.25" (6.5mm), Groove Thickness: 0.125" (3.0mm), Flange OD: 0.625" (16.0mm), Thickness: 0.25" (6.5mm) Tough general-purpose rubber for indoor machinery, electronics cabinets, tool benches, and metal panels; reduces vibration and guards cables against wear. Ideal for shop tools, 3D printers, CNC enclosures, server racks, audio gear, instrument panels, and DIY projects; keeps routing clean and organized. Easy installation for quick press-fit into drilled panel holes, speeding assembly and maintenance in enclosures, machinery, and equipment while keeping wire and cable pass-throughs snug and tidy. 7/16" Rubber Grommets with 1/4" ID for 1/8Thick Materials Buna-N Oil Resistant (Pack Size: 24) Ideal for applications where cable protection or spacing is essential Easy installation with a press-fit design Pack options available for flexibility Designed for use in automotive, home, or industrial setups