基本尺寸			型号
			Model
d[mm]	D[mm]	B[mm]
31.75	41.275	25.4	BCH2016
31.75	41.275	19.05	BCH2012
31.75	41.275	12.7	BCH208
31.75	38.1	31.75	BCE2020
31.75	38.1	25.4	BCE2016
31.75	38.1	19.05	BCE2012
31.75	38.1	15.875	BCE2010
31.75	38.1	12.7	BCE208
30	37	38	BK3038-ZW
30	37	26	BK3026
30	37	20	BK3020
30	37	16	BK3016
30	37	12	BK3012
28.575	38.1	31.75	BCH1820
28.575	38.1	28.575	BCH1818
28.575	38.1	25.4	BCH1816
28.575	38.1	19.05	BCH1812
28.575	38.1	15.875	BCH1810
28.575	34.925	25.4	BCE1816
28.575	34.925	19.05	BCE1812
28.575	34.925	12.7	BCE188
28.575	34.925	9.525	BCE186
25.4	33.338	25.4	BCH1616
25.4	33.338	22.225	BCH1614-P
25.4	33.338	19.05	BCH1612
25.4	33.338	15.875	BCH1610
25.4	31.75	25.4	BCE1616
25.4	31.75	19.05	BCE1612
25.4	31.75	12.7	BCE168
25.4	31.75	9.525	BCE166