... 3.Usage: Door Characteristics of Best seller ball bearing door hinge: 1, High quality material: stainless steel ,SUS201 and the ... a durability of three years; 3, The axial play are small, is 0.3mm, after rubs circle processing specially, guaranteed that ... polishing craft, which made completely amusing colors. Maintenances of gate hinge:1, Prevents from destroying in transportation; 2, Keep clean and ...