Superior Craftsmanship: Constructed from high-quality rubber materials, each closed rubber grommet offers exceptional flexibility, resistance to aging, and resistance to folding. Designed to provide robust insulation, these grommets are dust-proof, flame-retardant, and help prevent metal friction damage to wires and other materials. Comprehensive Kit Details: The assortment includes multiple sizes to suit various applications: M7.14 (58 pcs), M9.53 (44 pcs), M12.07 (30 pcs), M15.88 (20 pcs), M19.05 (16 pcs), M22.23 (10 pcs), and M25.4 (10 pcs). Each size is designed to meet different needs for sealing or isolating wires through panel entries. User-Friendly Installation: These rubber grommets simplify installation by eliminating the need for a lock nut on the opposite side. Install the grommet on one side only; it seals upon placement and opens only when the central membrane is punctured, ensuring a secure and stable setup. Versatile Usage: These rubber grommets help protect wires and cables from sharp metal edges, reducing the risk of damage. Suitable for use in automotive, plumbing, and electrical installations, they help shield cables from external elements such as dust and moisture. Material: Rubber Color: Black Package Contents: 188 x Closed Rubber Grommet Note: Light reflection and different display settings may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm. Plastic storage boxes are included in random styles; specific colors or styles cannot be requested. Only the items listed above are included.