Available on Request Ridgid Ridgid Square Drive Adapter, 42620 Ridgid 42620 model 774 15-16 Inch square drive adapter for model 700 power drive unit. This rugged 774 square drive adapter from Ridgid allows the Ridgid 700 power drive pipe threading machine to be... Available on Request Quick view Qty in Cart: 0 Price: Out of Stock Subtotal: Available on Request