Model shank diaD taper D1(mm) D-JT0 3/8",1/2",5/8",3/4", JT0 6.35 D-JT1 1",1-1/4",1-1/2" JT1 9.754 D-JT2 14mm,,40mm JT2 14.199 D-JT3 36mm,16mm JT3 20.599 D-JT4 JT4 28.55 D-JT5 26mm,12mm JT5 35.89 D-JT6 JT6 17.17 D-JT33 6mm,25mm,10mm JT33 15.85 D-B6 B6 6.35 D-B10 32mm,,20mm,50mm B10 10.094 D-B12 B12 12.065 D-B16 B16 15.733 D-B18 B18 17.78 D-B22 B22 21.793 D-B24 B24 23.825