This makes a breeze to insert in door. also has a new rough exterior to help prevent slippage. Unlike the other air wedges on the market our air wedge does not leak This has to be the absolute BEST Air Wedge on the market Product name: Pump Wedge Air Bag Maximum Load: 200 kilograms (440.9lb) Application: Auto repair, doors and windows installation Suitable for: used as a spacer when installing car doors, leveling furniture, UPVC windows and doors, kitchen appliances etc. Colour:Black Material:TPU Package Contents: 4 x Pump Wedge Air Bag 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.