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The suction power of this thing is unbelievable...I tried all the round suction cups with the little thumb pumps...could not pick up my concrete pavers, not even close...I have very rough concrete pavers, they weigh 100lbs each and it has no problem, they are 24”x24”X2” thick solid concrete...even the ones with lots of air pocket holes in the tops it locks on and don’t let go, I will literally stick to anything remotely flat...I even hung from a sheet of plywood...no joke.
This is an amazing product. It works great for lifting pipes and other narrow surfaces. The design is innovative and it's so easy to use.
I highly recommend the GRABO Foam Seal to anyone looking to upgrade their vacuum. It is well worth the investment.
Louise –
Needed for a site project, was highly recommeded.
Did the job just great
Review Source: dortechdirect.co.uk