Product Description
The AR series roller is suitable to moves the gate, moves the window:

-Characteristic: Passes is easily smooth, does not have the noise.
-May wilfully adjust highly, vertically, is parallel.
-Under certain pressure, through 20, 000 above round-trip test.
-Salt mist test: The carbon steel material passes for 96 hours.
-The stainless steel material passes for 300 hours.
-Product king pin Europe and America market.