1.75 In
Martin 3 3V 800 TB TB Sheave Bushing Bore 3 Groove V-Belt Pulley 2517 Cast Iron
A nice touch is the ceramic knob that turns smoothly every time.
1 In. X 1 In. X 3/4 In. Black Iron Reducing Tee
You will appreciate how the RMN5073B fits into your existing workflow without changes.
LOVEJOY 68514441459 L-Type Jaw Coupling Hub, L075 Coupling Size, 20 mm Bore, 2PK
You will find that the 4176597-4oz is easy to label and organize.