Screw-Jack- Base

Adjustable Screw jack/ Base jack/ U head jack is the neccessory accessory of scaffolding system
which required strong enough to support the scaffoldings in safe. we can produce and have
produced several kinds of screw jacks for customer's choice.
Our advantage of screw jack: 1, we produce the nuts by ourself; 2, our welding are totally done
by machine.
met.creatrue.net/Ringlock-Scaffolding_501.html#.U2maxqLrZk8