Wide Compatibility: Perfectly compatible with for Jet M6(6110,6012,6112,6113),series models. : Made of premium rubber, durable and elastic,wear-resisting and running, the wheel will not skid on the floor, make cleaning more efficient. Easy to Assembly: Cut and worn rubber tire, place new tire. Easy to replace the front caster wheel, snap in place, no tools required It is recommended that replace the tire tread every 6 to 12 months to performance and the front caster wheel is regularly cleaned. Quantity:4Pcs Colour:Black Material:rubber Package Contents: 4 * Wheel Tires 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.