Specification Brand : Brush Research BulletPoint1 : Flexible Cylinder Hone made of Silicon Carbide BulletPoint2 : Hone is Made in USA by Brush Research Manufacturing BulletPoint3 : Hone is self centering and can be used with 3/8" or 1/2" chuck drill BulletPoint4 : Perfect for bore honing and cylinder refinishing BulletPoint5 : The hone size listed on the product is the bore it is intended to be used for (or slightly smaller bore will work) CompatibleMaterial : Carbon Steel ItemName : Brush Research 2 3/4" (70mm) Flex-Hone Cylinder Hone Tool 600 Grit (Silicon Carbide) ItemPackageQuantity : 1 ItemTypeKeyword : flex-hones Manufacturer : Brush Research Material : Silicon Carbide PartNumber : BC234600SC ProductDescription : 8" OAL, stone section is 3" length. Can be used with a 3/8" or 1/2" chuck portable drill, drill press, or ther ProductSiteLaunchDate : 2010-02-08T05:55:20.000-00:00 UnitCount : 1