Introducing 'Starrett A5', your perfect companion for the Hole Saw Arbor Extension with a 13mm shank. This robust extension bar boasts a length of 300mm, equivalent to 12 inches, facilitating enhanced reach during drilling. Remarkably versatile, it seamlessly integrates with any arbor featuring an 11mm or 7/16 inch shank. Specifications include a fitting chuck size of 13mm or 1/2 inch. Trust the Starrett A5 Arbor Extension for a more comfortable, efficient, and precise drilling experience.