Product Description Features: Fits hole saws from 32-210mm (1.1./4 – 8.9/32″) diameter Arbor suitable for use with MPH Hole Saws Quick hitch arbor, allowing instant change of hole saw without tools and without removing the arbor from the chuck Specifications: Fits Hole Saw Diameter (mm): 32mm – 210mm Fits Hole Saw Diameter (in): 1-1/4″ to 8-9/32″ Fits Chuck Size (mm): 9.5mm Fits Chuck Size (in): 3/8″ Shank Size (mm): 8.75mm Shank Size (in): 11/32″ Screw Thread: 1/2-20 Includes: One (1) Arbor One (1) Drill bit Enquiry Tell A Friend