This is an authentic Ridgid replacement part manufactured for use with a miter saw utility vehicle, or miter saw stands. The knob has a threaded bolt to screw the knob into place. The knob is used to adjust the length of the work support mounting bracket, the knob is sold individually.
Genuine Ridgid replacement part, this item is sold individually. This is part of the clamp system that clamps the extension arm to the workstand frame on the Ridgid AC9944 MS-UV Miter Saw Utility Vehicle. To complete the handle assembly you will need part numbers, 000900510047 Bolt, 000900510048 Compression Spring and 000900510050 Abnormal Nut (3/8"-16 UNC).