• Best For: Coring crews who need a 4-1/2-inch (114 mm) hole through cured, reinforced concrete and want the Zenesis patterned-diamond bit sized for it instead of stepping up to the next barrel.
• Highlight: Patterned diamond placement for cured concrete with medium to heavy rebar; the 4-1/2-inch barrel sits between the 4-1/4-inch and 5-inch Zenesis bits in the same 1-1/4"-7 thread series.
• Expert Note: Wet drilling only, so keep a steady water supply running for the whole cut with this 4-1/2-inch bit. The Zenesis series lists a 10 mm segment height and 14-inch drilling depth, so plan 4-1/2-inch cores in slabs within that depth.
