We have National Power Core Drill with Stand with Product Detail Max Drilling Diameter - 4.7" (brick) or 3" (concrete) 120VAC, 1200 W Single Phase motor No-Load Speed - 1900 rpm Weight - 23 lbs Included Accessories - 2 Allen wrenches, 2 crescent wrenches, Core Drill Stand, Spare Brush . The "National Power Core Drill with Stand" is best product for you. We recommended National Power Core Drill with Stand