Package Content: You receive 4 pieces of walker ski glides. For people with limited mobility, this accessory can help you walk more stably and effortlessly. Sufficient quantity to meet your needs. Size: It is 5cm/1.9 inch high and the inner diameter is 2.82cm/1.11 inch and suitable for tube shafts with the diameter of 1 1/8 inch and for most walkers. The size of this model is 1-1/8 inch and 1 inch, not suitable for 3/4 inch models. Please confirm the size before buying. Material: Made of quality plastic, very stable after installed, with a smooth bottom; providing a stable base for your walker and reducing the risks of falling and injuries and helping you get around easier and with less effort. Suitable for: Our walker skid glides can be used indoors and outdoors, and suitable for various floors, such as carpet, concrete, tile and grass. You need to replace it regularly as severe wear can damage the floors. : No tools required, you can easily and quickly install it. It's a for people who want to improve mobility and independence. Colour:Gray Material:Plastic Size:50x80mm Package Contents: 4 * walker ski glides 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.