Studer 20mm Wide Step Dresser - Side Mounted Grain Dressing Tool

Form or step dressing large hard wide wheels. 10 mm depth x 20 mm wide hand set grains.
W Tungsten hot-pressed bond.
Side mounted plate is set to 5mm x 22mm x 19mm blade and set at 0 degree angle. Number 1 Morse Taper 20mm long shank.
Suggestions for Wheel grit size:
Part Code. Wheel grit size.
BTS-27. 30-40
BTS-25. 50-60
BTS-23. 80-100