RIDGID 47763 PH-60B Punch Head. The RIDGID 47763 PH-60B Punch Head is a new and improved Punch Head manufactured by RIDGID for RE-6 Electrical Tools. This Punch Head is compatible with the exclusive RIDGID QuickChange System, and delivers unmatched efficiency when knocking out holes in electrical boxes. This RIDGID 47763 PH-60B Punch Head is a must have for all contractors and electricians alike. This RIDGID 47763 PH-60B Punch Head is compatible with knockout punch dies from RIDGID and other manufacturers. The Adapter allows users to effortlessly attach knockout punches (sold separately) and maximize efficiency and productivity on the job site. Punch Head is fully covered under RIDGID's lifetime warranty, giving you the peace of mind that comes with the quality of all RIDGID products.