Name Plastic Roller Bearings/ Sliding Window & Door Roller/ Bearing Wheel
Material:GCr15-China/AISI52100 and Carbon Steel Gcr-11
Pom, pp, poly, abs, nylon wheels, chrome steel, carbon steel, PU, polyurethane etc
Bearing type :R42Z bearing R188ZZ  604zz   606zz  608zz  624zz   626zz  628zz  696zz  etc ZZ,Z,2RS,rs,RZ,2RZ,OPEN  Seals Types
Type:many different types with various sizes and customized
Color:White, Black, Yellow, Red, Green, Clean etc
 Feature:eel good, clearance of small, low-noise, competitive price with good quality
Application:machinery,skateboard,engines,transport vehicles,agriculture machine, caster wheel , small pulley , window , sliding door etc