The Model 975 Combo roll Groover is two tools in one. Like other RIDGID roll Groovers, the 975 mounts on the RIDGID 300 Power Drive for machine-powered roll grooving jobs, but is also designed to manually roll groove in-place pipe. Auto Tracking & Depth Setting Gauge Means Easier Use The 975 Combo Groover includes new, patented auto tracking technology for significantly easier grooving. Whether you're doing machine-powered or manual grooving, the AutoTrack gauge keeps the pipe automatically engaged to the groover throughout the grooving process. The 975 also includes a permanently depth setting gauge for quicker, repeatable set-up. Less Hand Force Required When manually roll grooving, the 975's 55% higher gear reduction means less hand force required versus competitive manual roll groovers. This is especially helpful for over-head roll grooving. Durability And Portability A tough, ductile iron construction means the 975 can absorb jobsite abuse and provide accurate grooves time after time. A cast-in handle makes the 975 easily portable to and from the jobsite.