Description:

[SIZE]: Hole Inner Diameter: 20mm I.D.; Mounting Hole Diameter: 21mm; Fit for Plate Thickness: 2.5mm. [DURABLE MATERIAL]: Made of flexible and durable rubber material, with good electric resistance capability.. [EASY TO USE]: Heat-resisting, mineral oil-resisting, wear-resisting, convenient and resealable, easy to installation.. [MULTI-FUNCTION]: Rubber grommets prevent metal on metal contact and protect wiring and cables that pass through firewall and metal panels.. [WIDE APPLICATION]: You can reinforce holes in leather, board, canvas and protect any wiring or cable in metal junction areas..