This 4-piece air pump wedge set is used between a car door and the door frame, giving the user a space between the door and frame so that a probe can be used to unlock the door via the interior unlock button or lever. The tool set is also often used as a spacer when installing interior doors, levelling furniture, windows and doors, kitchen appliances, etc. Made of abrasion-resistant but soft TPU material, these air pump bags will not burn, scratch and leave any mark on expensive furniture or household appliances. The rounded corners and internal plates enable these air bags to be inserted (crammed) into tighter spaces without bending. These inflatable shim bags has a span gap ranging from 2 mm to 50 mm and maximum lifting weight of 100 kg. Delivery includes 4 air pump wedges.