Features: Depth Adjustment - Adjusting screw and integral, index depth gauge Actuation - Feed screw with 1/2" ratchet wrench or any 15/16" hex Less Hand Force - 55 percent higher gear reduction requires less hand-force for manual grooving. This is especially helpful for overhead grooving. Durability & Portability - Tough, ductile iron construction means the 975 can absorb job site abuse and provide accurate grooves time after time. Its cast-in handle makes the 975 easily portable to and from the job site. Auto Tracking - Patented auto tracking technology for significantly easier grooving. Auto tracking keeps the pipe automatically engaged to the groover throughout the grooving process. Depth Setting Gauge - The 975 also comes with a permanently-fixed depth setting gauge for quicker, repeatable set-up. Two Tools in One - Use it manually for in-place overhead applications or, like other RIDGID groovers, mount it on the RIDGID 300 Power Drive (sold separately) for machine grooving jobs.