Specification: 1Heavy duty 2with carbon steel ball bearing 3with a high load-bearing capacity 4more quietly than metal roller bearings 5low noise, stable performance and durable 6able to work in sub-zero temperatures and have low rolling resistance 7suitable for countless applications: sliding doors, windows and other furnitures Materialnylon, plastic colorblack, or per request samplefree offered usagedoor and window processinjection wheel colorred, orange, white, green MOQ1000pieces delivery time15-25days paymentT/T, LC packingplastic bag inner, outside in carton
