Feature: 1.100% Brand new and high quality. 2.It is and practical. 3.Simple and easy to use. Specification: Color: Black Overall Size(Approx): 10.7mm Hole Size: 6mm (Detailed size as shown in ) Material: Rubber and Steel Package Included: 50 x Rubber Grommets Note: 1. (1 inch = 2.54cm) 2. Instruction included. Professional installation is highly recommended! Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.