Sheffield ARB-3 Alpha Series Arbor, For Holesaws 32mm-250mm, 11/32" Quick Change Shank for 10mm (3/8") Chuck, Quick Release Mechanism

Features:
• Large quick release arbor - pull the flange back to withdraw the locking pins from the holesaw.
• 11/32" hex shank suits 10 mm (3/8") chucks
• Compatible pilot drill is PLD-1