Material: Bumper hole plugs is made of good material, light weight, wear- , with nice cushioning, vibration reduction and sealing performance, providing you with a long term service. 9 kind different sizes: 60PCS*3/16inch, 60PCS*1/4inch, 60PCS*5/16inch,60PCS*3/8inch,30PCS*1/2inch,30PCS*5/8inch,20PCS*3/4inch, 20PCS*7/8inch, 20PCS*1inch. So many sizes knockout plugs hole can be used in a variety of different occasions. Snap in design: Electrical box knockout plugs hole no tools required, the plastic cover for screws is easy to install and use, you only need to choose the correct size plug according to the diameter and thickness of the hole and snap it into the hole, simple and quick. Widely applicable: Covers shelf hole plugs with classic color, these screw covers for doors can be applied to cover, conceal and decorate holes without spoiling your overall decoration style, suitable for steel furniture, table and chair legs, reserved holes in the cabinet and electric box, outdoor equipment and so on. Colour:Black Material:plastic Package Contents: 360 x Plastic Hole Plugs Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.