Features 8PCS IN 1 SET: Including 8pcs combination taps, sufficient in quantity, can be used and replaced at any time. SPIRAL FLUTE: These taps are designed with spiral flute, which has better chip removal effect, stable and efficient operation. MULTIPLE SIZES: Including 6 different sizes of taps, the thread is standard, suitable for various tapping needs. DURABLE MATERIAL: Using high speed steel material, with ti plated surface, with high hardness and rust resistance. 1/4IN HEX SHANK: 1/4in hex shank design, easy to install, can be used for drilling, tapping and chamfering, etc. Specification: 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 LengthM30.5mm3mm7mm / 0.28in12mm / 0.47in65mm / 2.56inM40.7mm4mm7mm / 0.28in14mm / 0.55in65mm / 2.56inM50.8mm5mm8mm / 0.31in15mm / 0.59in67mm / 2.64inM61mm6mm9mm / 0.35in15mm / 0.59in68mm / 2.68inM81.25mm8mm11mm / 0.43in21mm / 0.83in69mm / 2.72inM101.5mm10mm13mm / 0.51in23mm / 0.91in70mm / 2.76in Package List: 8 x Spiral Flute Tap Note: When taps are used for drilling, please bring protective equipment to prevent the debris from splashing and hurting yourself. Package List 8 x Spiral Flute Tap