Dry Core Bits - X300 - Masonry

Designed for HVAC installers drilling vent and pipe penetrations through block walls and masonry substrates. This 4-1/2 inch dry core bit from Diamond Vantage's X300 line features a .125-inch segment thickness and 5/8-11 arbor thread for direct mount to standard angle grinders. The dry cutting design eliminates water hookup requirements on interior jobs where wet drilling creates cleanup problems. Segment height provides extended life in brick, block, and medium-density concrete applications. Runs on electric or gas-powered grinders for flexibility on jobsites without power access. Built for masonry contractors and mechanical trades drilling bolt anchors, conduit runs, and utility access points in commercial and residential construction.