The Protimeter Masonry Drill Bit BLD34DR is a carbide-tipped spiral drill bit designed for precision drilling into concrete slabs. Paired with the Drill Stop Collar BLD34DRCLR, this toolset ensures that you drill to the correct depth for accurate moisture testing and installation of Protimeter Humidity Sleeves. The 3/4" (19mm) diameter bit is perfect for standard concrete drilling tasks, while the adjustable stop collar ensures consistent depth, preventing over-drilling.