Mount face milling cutters, shell end mills, and slotting cutters securely with Combination Face Mill Adapters MAS-BT Tool Holders. Designed for CNC milling machines and machining centers operating with MAS 403 / JIS B 6339 (BT) steep taper spindles, these dual-purpose arbors feature drive keys and a removable feather key. This versatile setup allows you to mount indexable face mills with transverse drive slots as well as shell end mills with longitudinal drive keyways, delivering maximum spindle flexibility and rigid torque transmission across heavy metal-cutting operations.
