[3  & 4 To 1  & 2]

[1-1  & 4 To 20mm]

[1 To 3  & 4]

2 required per Cutter. Each item number consists of one of each, #BU-561, (D) diameter: 3/4, (D) bore: 1/2, a: 5mm, C: 55mm, B: 9mmbu-561 shaper Cutter T Reduction bushings (with flange) 3/4 to 1/2