General description Replacement wheels for vacuum cleaners compatible with various models including NV350, NV351, NV352, NV355, NV356E, NV500, NV501, NV502, and more. These wheels are designed to enhance the performance of your vacuum cleaner while ensuring a smooth operation. Technical specifications Size: 12.9 x 7.12 mm Material: High-quality plastic Color: Gray Package Contents: 60 wheels Measurement allowed error: +/- 1-3 cm Installation Use a flathead screwdriver to push the old wheel up. Install the new wheels into the groove (note: these are the smaller wheels, not the larger rear wheels). Usage Designed for smooth operation and to prevent scratching the floor. Quiet and dirt-resistant wheels that minimize noise during use. Other information Light reflection and different displays may cause the color of the item to differ slightly from the actual product.