Starrett A2 Quick-Hitch Hole Saw Arbor with HSS Pilot Drill 7/16" Hex Shank 1-1/4" to 8-1/4"

The Starrett A2 Quick-Hitch Hole Saw Arbor is a professional-grade drive arbor designed for fast, tool-free hole saw changes across an exceptionally wide range of saw diameters. Compatible with hole saws from 1-1/4" to 8-1/4" (32–210mm), this arbor is an ideal single-arbor solution for contractors, electricians, plumbers, and serious DIYers who work with multiple hole saw sizes.

The Quick-Hitch system features two locating pins that insert into the hole saw cap, preventing the saw from overtightening on the screw thread. This design allows instant hole saw swaps without any additional tools and without removing the arbor from the drill chuck—keeping your workflow fast and efficient on the job.

Key Features:

• Fits hole saw diameters from 1-1/4" to 8-1/4" (32–210mm)
• Includes 1/4" (6.35mm) High Speed Steel (HSS) pilot drill for clean, accurate starting holes
• 7/16" (11mm) hex shank — fits standard 1/2" and 3/8" drill chucks
• 5/8"-18 screw thread for secure hole saw attachment
• Quick-Hitch design — tool-free hole saw changes without removing arbor from chuck
• Set screw in body allows easy replacement of the pilot drill
• Two locating pins prevent hole saw overtightening on thread
• Recommended for use with Starrett Constant Pitch (SH) and Dual Pitch (DH) Bi-Metal Hole Saws

Backed by Starrett's legacy of precision tool manufacturing since 1880, the A2 arbor delivers the reliability and durability professionals demand. The included HSS pilot drill provides accurate hole placement and reduces the risk of saw wander, making every cut cleaner and more consistent.