1) Material: PVC wheel with pp core 2)Diameter:65-125mm 3)With or without brake 4)Roller bearing or ball bearing available 5)Load capacity:20-80kg 6)Installation height:80-155mm 7)Application:trolleys,medical instuments,household apparatus,rack,furniture ,chair,etc 8)Shippment timely 9) Passed the evaluation of ISO 9001:2000 quality system certification