Specification Brand : Super Tool BulletPoint1 : When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters. BulletPoint2 : 6" overall length BulletPoint3 : 1" flute length BulletPoint4 : 9/32" shank diameter, For Reaming abrasive material BulletPoint5 : This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground. ItemName : 5/16" Expansion Reamer, Carbide Tipped, Straight Shank, 56001, USA Made ItemPackageDimensions_Height : 0.5 inches ItemPackageDimensions_Length : 6.2 inches ItemPackageDimensions_Width : 0.5 inches ItemPackageQuantity : 1 ItemTypeKeyword : expansion-reamers Manufacturer : Super Tool Material : Carbide ModelNumber : 56001 NumberOfItems : 1 PartNumber : 56001 ProductDescription : 5/16" Expansion Reamer, Carbide Tipped, Straight Shank, 56001, USA Made ProductSiteLaunchDate : 2014-11-14T17:08:45.785Z SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31161500