Check the listing for details. BAL 25066 5th Wheel King Pin Tripod Stabilizing Jack. Condition: New. Listed at 165.02 USD. 5th Wheel King Pin Tripod Stabilizing Jack (25066) by BAL®. The King Pin Stabilizing Jack is designed for stabilizing the front of a fifth wheel travel trailer by applying pressure against the king pin. The standard model 25015A includes a non-extendable telescopic leg on the jack tube side and a non-extendable telescopic leg on the jack tube side and a non-extendable support tube leg. The deluxe model 25030 includes extendable legs on both the jack tube and support tube sides for longer reach when used at a campsite with uneven terrain. This superior product is perfect to make your trailer towing experience safe and convenient. Designed to meet the highest quality standards, it is second to none in durability and performance. Made using the finest materials, it is sure to serve you reliably for a long time.