Read this guy write about DeWalt DW5926 1-Piece 5-Inch by 22-Inch SDS Max Core Bit

DEWALT DW5926

1-Piece 5" x 22" SDS Max Core BitApplications:For use with all brands of SDS Max and spline rotary hammers.Used for drilling holes in poured concrete and other masonry up to 6" diameter.Used by mechanical and electrical contractors to drill holes through walls and floors for pipe and conduit passage.Features:Alternating tooth design delivers increased durability and quicker centering.Tool free centering bit allows for easier removal.Low friction core body provides faster drilling.One piece design provides more durability than two piece design. Tool free centering bit allows for easier removal One-piece design provides more durability than two-piece design ... »» Read more...

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