Specifications:Straight Flute Tap:Thread Size: 3/8-16 UNC; Thread Length: 24mm / 0.94";Square End Size: 6.2mm / 0.24"; Total Length: 79mm / 3.11"Material: 6542 High Speed Steel (HSS); Finish: Uncoated; Cutting Direction: Right HandTwist Drill Bit:Cutting Edge Diameter: 7.9mm / 0.31"; Shank Diameter: 7.9mm / 0.31"Cutting Edge Length: 61mm / 2.4"; Total Length: 116mm / 4.57"Material: M35 Cobalt High Speed Steel (HSS)Package Content:1pcs x Straight Flute Tap, 1pcs x Twist Drill BitDescriptions:Straight flute design, downward chip removal. Right hand thread cutting, fast tapping with accuracy. High-speed steel tool has high hardness and toughness for wear resistance. Features just the base substrate without any additional coatings, suitable for wide ranges of applications. Suitable for processing through holes.