Designed for permanent installation, these screw-style jacks hold platforms and other equipment in place and stabilize them at the required height. Drill a 1-1/4" diamter hole through the platform to be leveled and bolt the platform between the upper and lower flanges of the jack's dividing housing. Flanges are 3-3/8" overall diameter, 1/8" thick, and have (6) 1/4" diameter mounting holes equally spaced on a 3" daimeter hole pattern.
Jacks are made of steel with a polished chrome finish and have an 8-1/2" long handle that folds down when not in use. They stand on a 3-7/8" diameter swivel base that has a slip-resistant rubber pad on the bottom. Screw diamter is 1-1/4". Lift rate is 1/4" per crank revolution.
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