Steel Dragon Tools 45370 Drive Gear Assembly fits RIDGID 87740 Motor 300 Pipe Threading Machine One (1) SDT 45370 Drive Gear with 48 teeth. One (1) SDT 45060 Gear Bearing. One (1) SDT 45315 Front Bearing. Allows 300 motor to run at 38 RPM Fits RIDGID Part Numbers: 45370, 45060, 45315