Check the listing for details. dry core bit set: 2", 2.5" 3.5" for SDS max hammer drill and adapter. Condition: New. Listed at 169.00 USD. 2", 2 1/2" & 3" Laser welded Turbo rim segmented dry core bit.Manufactured with a -V- point segment for quick coring without bounce back.(Equivalent to major brands without being a member (Signing up for discounts? or high cost)Industrial Segments manufactured for following Applications: High PSI Paver Brick with High Alumina & refractory bricks, stone and other Dense Materials such as Bluestone, Flagstone,cured concrete with imbedded rebar/wire mesh. Please carefully read other brands description were they clearly state "Not for hard materials or with any steel" Barrel may be solid or with slits Fields of interest based on size:Infant fence install, HVAC, Running cable wire, range vent hoods, dryer vent holes, garage fire sprinkler install, fence post on concrete slabs, installing a radon mitigation system. OUTER DIAMETER: 2, 2.5", 3”SEGMENT HEIGHT: 11MM (7/16")SEGMENT THICKNESS: 1/8”SEGMENT MOLD: GROOVED TURBO SEGMENT STYLE MATRIX HARDNESS: SOFT BOND FOR HARD MATERIALS WITH STEEL REINFORCINGCORE TRAVEL: 10”THREAD SIZE: 5/8" BOND TO CORE: INNER/OUTER DOUBLE LASER WELD CENTER GUIDE NOW AVAILABLE FOR THIS ITEM.PLEASE SEE ITEM # 291835578281 OUTER DIAMETER: 2", 2.5" and 3" SEGMENT HEIGHT: 3/8" (12mm) SEGMENT MOLD: GROOVED TURBO SEGMENT STYLE MATRIX HARDNESS: SOFT BOND FOR HARD MATERIALS, BRICK, CONCRETE WITH STEEL REINFORCING AND HARD STONES CORE TRAVEL: 10” THREAD SIZE: 5/8" - 11 BOND TO CORE: INNER/OUTER DOUBLE LASER WELD