This is the 84 Engineering 5" (125mm) Contact Wheel that attaches directly to the SM-72 and SM-2000 Rotating Platen to give you 2", 3" and 5" contact wheels and 3 slack belt lengths available at a flick of the Quick Release lever.
It is solid, well engineered and well manufactured.
 
Key Features include;
Installs directly to the SM2000 and SM-72 Rotating Platens
Enables 3 different length slack belts
125mm diameter nitrile rubber coated aluminium hub
 
Application;
Profiling large radius curves
Concave (Hollow) Grinding at 5" diameter
Convex Grinding (on various Slack Belt lengths)