Specification Brand : OQRSQOGV BulletPoint1 : WEAR RESISTANT ALLOY STEEL: Hex shank tap socket is made of alloy steel with high hardness and high wear , sturdy and BulletPoint2 : FIRM CLAMPING: There are square holes in the apron, and there are card pads in the square holes to make the clamping more firm BulletPoint3 : WIDE APPLICATION: Used with hand drill, widely used in manufacturing, pneumatic air screwdriver, DIY, auto repair and other professional machine maintenance BulletPoint4 : 60‑63HRC HARDNESS: Fully ground machine tap is made of 6542 high speed steel HSS material after overall heat treatment, the hardness reaches 60‑63HRC BulletPoint5 : FOR SUPERHARD MATERIALS: Come with wear , long life, can attack superhard metal materials such as die steel and stainless steel ExternallyAssignedProductIdentifier : 8580887162791 ItemName : OQRSQOGV For Hardware 16Pcs Tap Socket Set Machine Lengthened Tapping Chuck 1/4in Hex Shank Steel Hand Tools ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 14 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : tapping-inserts Manufacturer : OQRSQOGV ModelName : OQRSQOGV1r6dvbwh0k ModelNumber : OQRSQOGV1r6dvbwh0k NumberOfItems : 1 PartNumber : OQRSQOGV1r6dvbwh0k ProductDescription : Item Type: Tap Socket Set Material: Alloy steel + high speed steel Socket Diameter Size: M4 M5 M6 M8 M10 M12 M14 M16 Hex Shank Diameter: 1/4in Function: Suitable for manufacturing, auxiliary tools for wire cleaning and wire returning after plating(painting) of male thread or female thread