1. Description: Pulley with plastic cover is widely used in doors & windows, housings & stands, caster and so on. The material of plastic cover use engineering plastic, such as PA. PA 66. PA 66 with 30% GF. POM and PU etc..
2.Features:
1) The housing is made of plastic / aluminum / zinc / pressed steel material according to customers' requirements
2) The rollers outer ring is produced of plastic materials (POM, PP, PA, nylon) Or metal material, with excellent surface for sliding windows and doors
3) The inner ring is produced of carbon steel with zinc plated, with excellent resistance to corrosion capacity
4) The roller set with long life performance.
3.Different colors: White, black, yellow, gray, brown, etc.