This is a genuine OEM supplied component which is specially made for use with Ridgid roll groovers. It provides an identical replacement for a missing or a damaged 1/2" drive 90-degree ratchet that was included with a new unit. The part ratchet rotates a feed screw that advances a groove roll into the pipe/tube to form a groove that meets...Read more specifications required for mechanical coupling systems and alsodrives the equipment around the pipe. Please make sure to refer to the owners manual of your model for the correct application of this component. Keep in mind this high-quality ratchet is made of durable metal and is sold individually.