Remind: The core bit, zero tolerance drum and 3 cup wheel arbor is 5/8-11 Thread. This package carries (a)-(c).1 Piece of 1 3/8 (35m) Diamond Ultra High Segment (9mm Segment) Core Drill Bit / Hole Saw for concrete stone. Professional grade 1 3/8" or 35 mm diameter Diamond Core Bit Hole Saw with 9 mm segment height, 3.0 mm segment thickness, 4" overall Height and arbor 5/8 11 (Made with Premium Diamond) works great on GRANITE, Marble, Concrete. (b) 3 Pieces of 4" Diamond Ultra Wide Segment Diamond Grinding cup wheel for stone concrete (5/8"-11 Thread arbor). Random Cup Wheel color: Red or Blue or Black. 1 Piece of 1 3/8. " / 35mm Zero Tolerance (Metal-Filled) Diamond Drum Wheel (5/8"-11 threaded arbor). Do very good job for cutting of the stone, concrete sink hole. The item "1 3/8 Diamond Core Bit Zero Tolerance Grinding Drum 3 Cup wheel Concrete stone" is in sale since Saturday, October 21, 2017. This item is in the category "Home & Garden\Tools & Workshop Equipment\Power Tools\Saws & Accessories\Saw Blades". The seller is "tool4stone" and is located in Seattle, Washington. This item can be shipped worldwide.