Materials-The mat clip is made of strong ABS plastic and stainless steel spring,which is not easy to rust and has a longer life Anti-Slip Strong Clamps-The clamp come with tooth clip,which has a stronger bite force,so that the mat will not fall down when you clean it,even it is heavy duty mat Save Space-The Mats can be hung in an orderly manner, the work area is neater. Quickly dry the mats to avoid secondary pollution and the construction is more professional Simple Installation-Package come with screw for each clip,you can install it to the wall. it can be also used with 19mm diameter stainless steel tube. Both installation methods are convenient and simple Widly Use-It is not only suitable for car mats, but also for washing towels, door mats, carpets and other items. Colour:red+black Material:plastic+metal Package Contents: 4 x Car Wash Floor Mat Clamps 1 x Mounting screws 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.