BULLDOG Trailer Jack Accessory Weld-On Male Swivel Mount 5/8" Pin 2" OD $12.0 Brand Bulldog Type Jack Accessory Maximum Lifting Height 2 in Manufacturer Part Number 500240 Item Length 2 in Minimum Lifting Height 2 in UPC 0086693002408 condition New New in original packaging. Bulldog Replacement Pipe Mount for Swivel Jacks - 2-1/4" Male - Weld On - 5/8" Pull PinFor use on 170 Sidewind Series Jacks. Contain 015279 Wels-on Mount