50 | 12 | 1.5/2.0 | 06B 11or13 teeth | 100-1500 | carbon steel | zino-plated |
60 | 12/15 | 2.0/3.0 | 06B 11or13 teeth | 100-1500 | stainless steel | chromo-plated |
76 | 20 | 3.0/4.0 | 10A 14 teeth | 100-2000 | aluminum | rubber-casted |
89 | 20 | 3.0/4.0 | 10A 14 teeth | 100-2000 | plastic-covered |
medium /heavy load roller