Jack base is used to join with either adjustable steel scaffold props or scaffold system, to hold timber beam and scaffold accessories in place. With different lengths and different outer diameter steel tube, our jack base's loading grade is from 85KN to 240KN. As leading construction products supplier in China, we supply all kinds of scaffold products and accessories, like jack base, U head, swivel jack base, fork head jack, base plate, U fork base, jack nut, etc. Welcome to visit our official website : http://www.constructionformworkaccessories.com