/ Saws / PTA & Hand Saw Blades / Hole Saw Arbors / Arbor Extension / A15 * Not actual product image 56651 A15 Hole Saw Arbor 56651 Other similar products 300mm (12") hole saw arbor extension bar. Suitable for use with any arbor with a 9.5mm (3/8") shank size. Features Specifications Downloads Contact Starrett Features 300mm (12") arbor extension 300mm 12" 9.5mm Specifications Length (mm): 300mm Length (in): 12" Fits Chuck Size (mm): 9.5mm Fits Chuck Size (in): 3/8" Downloads Starrett Hole Saws (Bulletin 671) Starrett Hole Saw Brochure includes all hole saws, drive arbors, pilot drills, quick change systems sets and accessories