BM103 BM103X052B054G53 (0.205mm)X052B054G54 (0.255mm)X052B054G55 (0.305mm)DWC-C,CR,HA. H, H', H1(Manual).UPPER & lower Diameter: 0.105 - 0.335
BM104 BM104X052B092G54 (0.205mm)X052B092G55 (0.255mm)X052B092G56 (0.305mm)H' (SK3/AF) lower Diameter: 0.205 - 0.310
BM107 BM107X052B240G52(0.205mm)(X052B123G53)X052B240G53(0.255mm)(X052B123G54)X052B240G54(0.305mm)(X052B123G56) DWC-H, HA, SA, SB, SZ (AF-1) UPPER Diameter: 0.205 - 0.305