/ Saws / PTA & Hand Saw Blades / Hole Saw Arbors / Arbor Extension / KA15-N * Not actual product image 11559 KA15-N Hole Saw Arbor 11559 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 Contact Starrett Features 300mm (12") arbor extension Arbor suitable for use with SH, DH, CT and D hole saws (Diamond hole saw applications will usually require an arbor with a carbide tipped pilot drill) Specifications Length (mm): 300mm Length (in): 12" Fits Chuck Size (mm): 9.5mm Fits Chuck Size (in): 3/8"