Item Type: Spiral Flute Tap Material: High Speed Steel Application: Used for drilling, tapping, chamfering Surface Treatment: Ti plating Color: Gold + Silver Tap Specifications: M3x0.5mm, M4x0.7mm (2pcs), M5x0.8mm, M6x1mm (2pcs), M8x1.25mm, M10x1.5mm Tap Shank Type: Hex Shank Tap Shank Size: 1/4in SpecificationThread PitchDiameterDrilling LengthTapping LengthTotal Length M30.5mm3mm7mm / 0.28in12mm / 0.47in65mm / 2.56in M40.7mm4mm7mm / 0.28in14mm / 0.55in65mm / 2.56in M50.8mm5mm8mm / 0.31in15mm / 0.59in67mm / 2.64in M61mm6mm9mm / 0.35in15mm / 0.59in68mm / 2.68in M81.25mm8mm11mm / 0.43in21mm / 0.83in69mm / 2.72in M101.5mm10mm13mm / 0.51in23mm / 0.91in70mm / 2.76in Package List 8 x Spiral Flute Tap When taps are used for drilling, please bring protective equipment to prevent the debris from splashing and hurting yourself. 18PCS IN 1 SET: Including 8pcs combination taps, sufficient in quantity, can be used and replaced at any time. 2SPIRAL FLUTE: These taps are designed with spiral flute, which has better chip removal effect, stable and efficient operation. 3MULTIPLE SIZES: Including 6 different sizes of taps, the thread is standard, suitable for various tapping needs. 4DURABLE MATERIAL: Using high speed steel material, with ti plated surface, with high hardness and rust resistance. 51/4IN HEX SHANK: 1/4in hex shank design, easy to install, can be used for drilling, tapping and chamfering, etc.