Each selection includes sets of two taps per dimension: taper and bottoming. Selections Ref 227.SJ1 and 227.SJ2 include cobalt taps (Ref 227.S). Tray PL.47 and box BT.109G: for selection Ref 224.227J1 and 221.227SJ1. Tray PL.46 and box BT.105: for selection Ref 224.227J2 and 221.227SJ2.