Specification Brand : USA Knifemaker Supply BulletPoint1 : 7/16" Cutting diameter BulletPoint2 : 5/32" hole for pilot BulletPoint3 : 2 piece construction (pilot sold seperately) BulletPoint4 : High Speed Steel BulletPoint5 : Counterbores are used to cut a pocket or recess that is centered over an existing hole. In knifemaking they are used to make the heads of screws, pivots, etc sit flush in surrounding material or to cut pockets for the heads of corby bolts and other handle fasteners. Color : Silver DriveSystem : Square ExteriorFinish : Zinc Coated,Steel ExternallyAssignedProductIdentifier1 : 0616639510249 ExternallyAssignedProductIdentifier2 : 616639510249 ExternallyAssignedProductIdentifier3 : 00728709168424 FinishType : Uncoated ItemDisplayWeight : 0.15 pounds ItemName : Steel Counterbore- 7/32" with 3/32" Pilot Hole ItemPackageDimensions_Height : 0.437 inches ItemPackageDimensions_Length : 6 inches ItemPackageDimensions_Width : 0.437 inches ItemPackageQuantity : 1 ItemTypeKeyword : counterbores Manufacturer : USA Knifemaker Material : Stainless Steel MeasurementSystem : Imperial MetalType1 : Zinc MetalType2 : Alloy Steel ModelNumber : RC-437100 NumberOfFlutes : 1 NumberOfItems : 1 PartNumber : 1225014 ProductDescription : Interchangeable pilot counterbores can be used with multiple different sizes of pilot. This allows you to pick a counterbore and pilot combination that suits your needs. The pilot will fit into hole in the end of the counterbore and is held in place with a set screw. To choose the counterbore and pilot you need, look for a pilot the same diameter as the through hole and a counterbore the diameter of the pocket you need to cut. Make sure the shank size of the pilot matches the hole size in the counterbore so the two parts will fit together. ProductSiteLaunchDate : 2020-04-02T15:00:01.460Z Size : 6 inches StreetDate : 2016-06-10T00:00:01Z Style : RC SurfaceRecommendation : Alloy Steel UnitCount : 1 UnspscCode : 20121600