輪徑 Wheel Diameter (inches) | 輪寬 Wheel Width (inches) | 載重 Load Capacity (lbs) | 軸承類型 Bearing type | 軸寬 hub length (inches) | 軸徑 plain bore size (inches) | 輪子代號(hào) wheel # | 3 | 1 1/4 | 180 | 球軸承 Ball brearing | 1 11/16 | 1 3/16 | PPR314WB | 4 | 1 1/4 | 250 | 球軸承 Ball brearing | 1 11/16 | 1 3/16 | PPR414WB | 2 | 350 | 滾針軸承 Roller bearing | 2 3/16 | 1 3/16 | PPR420W | 5 | 1 1/4 | 300 | 球軸承 Ball brearing | 1 11/16 | 1 3/16 | PPR514WB | 2 | 450 | 滾針軸承 Roller bearing | 2 3/16 | 1 3/16 | PPR520W | 6 | 2 | 550 | 滾針軸承 Roller bearing | 2 3/16 | 1 3/16 | PPR620W | 8 | 2 | 700 | 滾針軸承 Roller bearing | 2 3/16 | 1 3/16 | PPR820W |
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