1、EASY TO USE: The ladder jacks are robust and easy to use, designed for steel plates and mounted on both sides of the expansion ladder for ultra fast installation and removal 2、ENHANCE STABILITY: The 2 stage short body ladder jack shall be fully paved with a 20in wide platform that meet the requirements. And the safety screw can prevent the ladder type jack from falling off the ladder, effectively ensuring the safety of personnel and items. The design of the left and right grooves can greatly improve the stability of the ladder jack and the bearing weight 3、FLEXIBLE AND ADJUSTABLE: Ladder jacks can be adjusted to fit round or D shaped steps, flexible and can meet your different using needs, useful and practical 4、WIDE APPLICATION: Steel ladder jacks are used for a wide range of purposes, such as painting siding, window repair, general maintenance. 2 packs of ladder jacks are required. Suitable for most small and large ladders 5、APPLICABLE SCENARIO: These sturdy riveted and welded trapezoidal jacks work on the inside or outside of a ladder. Telescopic ladder fittings can protect the gutters, siding, roof and painted finishes of the scaffold platform; Prevent damage to your home and keep yourself safe