Great Variety of Sizes: 188 Pcs of the most commonly used sizes assorted rubber grommet assortment kit. High Quality: Rubber washers are made of flexible and durable rubber material, they are of good electric resistance capability. Easy To Use: Wire grommets are quicker and easier to install since they can be placed on one side only. Wide Range of Applications: Very useful for auto and other projects where wiring cable needs to be run through metal or plastic openings. Packaging Includes: 1/4" (40pcs), 5/16" (40pcs), 3/8" (40pcs), 7/16" (25pcs), 1/2" (20pcs), 5/8" (5pcs), 7/8" (10pcs-(5pcs closed Gasket+5pcs Eyelet Ring Gasket)), 1" (8pcs-(5pcs Eyelet Ring Gasket+3pcs closed Gasket)).