VSTD type : TungMeister, Straight shank for VTB type slotting heads
THSZWS = Connection screw size
  VSTD08L070S05-S Available8.0008.0070.00S05 steel 6859179 0
  VSTD10L080S06-S Available10.00010.0080.00S06 steel 6859197 0
  VSTD12L090S08-S Available12.00012.0090.00S08 steel 6859180 0
  VSTD16L100S10-S Available16.00016.00100.00S10 steel 6859134 0

For VSTD type shank, just VTB grooving head is recommended.
If other heads are used on the VSTD shank, the depth of cut must be smaller than the APMX in each head.
The VSTD type shank does not have external clearance, so the shank may interfere with the work piece.