Red Hound Auto Jack Stand Drop Leg for 2 inch Inner Diameter Jacks Foot Pad Insert Camper Trailer Extra Height Adjustable 12" Drop Leg Foot Stand with Pin for Jacks with 2" Inner Diameter (measure before ordering) Perfect for modern A-frame style RV jacks with 2 inch ID - Fits MOST 2K to 5K jacks - Specially designed tube that fits inside the inner tube of the jack Heavy duty stand eliminates the need for wood blocks or other temporary solutions - Reduces crank time and effort (less up and down cranking) Height: 12", Distance between Holes: 2", Pin Hole Diameter: 3/8", Foot Diameter: 5", Outside Tube Diameter: 1-3/4 (fits jacks with 2 ID) Constructed of heavy duty zinc plated steel and built to last. Note: Holes are NOT on the notched side; see photos and compare