W Guide Wheel 1.Track Roller V Groove Bearing 2.LV,V,WV,RM type 3.Accept small order W Guide WheelRM2ZZ,RM2-2RS,RM3ZZ,RM4ZZ...Track Roller Characteristics-“W” Groove Profile is the formed by the two “V” with 90degrees Angle.-Double Row Angular Contact Ball and Thick-Walled Outer Rings-High Quality Chrome Steel and Stainless Steel-Precision Tolerance and Multi-Purpose Grease Choice-Metal Shields ...