Specification Brand : Carr Lane Manufacturing BulletPoint1 : A: 1/2-13 BulletPoint2 : B: 1 BulletPoint3 : C Diameter: 1/4 BulletPoint4 : D: 1/4 BulletPoint5 : G: 14 deg. ItemName : CL-810-GSS Carr Lane Manufacturing Gripper Swivel Screw, Tool Steel Serrated: Thread 1/2-13, Shank 1 ItemTypeKeyword : hand-screw-clamps Manufacturer : Carr Lane Manufacturing Material : Steel PartNumber : CL-810-GSS ProductDescription : Screw clamp with a hardened tool steel swivel ball, either serrated or flat. A positive stop prevents the ball from swiveling too far. Serrated grippers are designed to slightly penetrate the workpiece to significantly increase gripping force, rather than relying on static friction alone. Made in USA. ProductSiteLaunchDate : 2014-01-14T02:38:38.525Z SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 31161500