DEWALT DW5586 1-3/8-Inch Diamond Drill Bit;

Dewalt DW5586 Specifications: Diameter: 1-3/8" Overall Length: 3" Drilling Length: 1/4" Shank Size: 3/8" Speed: 1,200 to 2,500 RPM MaxDewalt DW5586 Includes: (1) Drill BitDewalt DW5586 Features: Diamond Core Drill Bits cut modern hard tile and porcelain better than traditional "spear head" bits Core ejection slot removes plugs for repetitious holes Reverse spiral thread delivers continuous water feed for increased speeds and longer life 3/8" shank fits most standard drill chucks Diamond welded tip for greater life and durability Not for use in hammer drills or drill presses Do not exceed maximum RPM rating.