NCCTEC hand-held drill machine, mainly used for drilling holes in the wall, but it can also work with the support to drill holes in the floors.
3.3'' dustproof and waterproof device for Diamond Core Drill Machines | 83mm tool for install air conditioner in the wall .
MAX drilling hole diameter:83mm 3.3''
3m of water bags: 3 pcs
material of water bags: PP, thick, 10#