Detailed Product Description Specification:1.Motor: 12V/24V, 15W, 4rpm2.Swivel Joint: two couplers: one end is 3" victaulic clamp coupler and female screw NPT 2.5''; The other end is female screw NPT 2.5. The motor drives the swivel joint move in circle. Then the swivel joint can drive spray heads work in circle.