This is a Ryobi BT3100 table saw fence locking head. It might fit Ryobi BT3000 and the sears equivalent. I don’t know. Made of cast aluminum. Has overall wear but works fine.
Ryobi bt3100/3000 rip fence and guide rails in excellent condition. Rip fence has the heavy duty tail piece. The tail piece is prone to breakage so this upgrade makes the piece very durable.