1/4-28 UNF 2B High Speed Steel Uncoated Machine Spiral Flute Threading Tap 2pcs 28mm X 24mm X 100mm and it has a hexagonal

and it has a hexagonal section in the middle for an increased bearing surface when adjusting the fitting with a wrench

- Made of good quality iron and electroplating

Connector Size: 15

Product Name: Sanding Disc

1/4-28 UNF 2B High Speed Steel Uncoated Machine Spiral Flute Threading Tap 2pcs 28mm X 24mm X 100mm and it has a hexagonalSpecifications: Thread Size: 1 4 28 UNF Thread Length: 23mm 0. 91" Square End Size: 5mm 0. 2" Total Length: 67mm 2. 64" Thread Tolerance Grade: 2B Material: High Speed Steel (HSS) Finish: Uncoated Numbers of Flutes: 3 Flutes Cutting Direction: Right Hand Package Content: 2pcs x Spiral Flute Thread Tap Descriptions: Spiral flute design, upward chip removal. Right hand thread cutting, clear threads, fast tapping with accuracy. High speed steel tool has