This screw tap drill bit set is made of high speed steel, long lasting and good abrasion resistance. Compact and portable, this tool set is perfect for tapping, suitable for soft metal._x000D_ _x000D_ Features:_x000D_ _x000D_ High speed steel screw tap bits are long lasting and good abrasion resistance. _x000D_ Standard thread distance design, clear and tidy, no burr. _x000D_ With these machine thread taps, you will have a smooth tapping experience with them. _x000D_ Specifications are marked on the surface, convenient to choose. _x000D_ Suitable for soft metal and materials with low hardness such as aluminum sheet and iron plate. _x000D_ _x000D_ Specification:_x000D_ Material: High Speed Steel_x000D_ Color: Silver_x000D_ Standard: Metric_x000D_ Shaped Optional Package List Edge Diameter Pitch Edge Length Total Length Outer Diameter _x000D_ Point Head 1 x ST2.0*0.4_x000D_ 1 x ST2.5*0.45_x000D_ 1 x ST3*0.5_x000D_ 1 x ST4*0.7_x000D_ 1 x ST5*0.8_x000D_ 1 x ST6*1.0 2mm_x000D_ 2.5mm_x000D_ 3mm_x000D_ 4mm_x000D_ 5mm_x000D_ 6mm 0.4mm_x000D_ 0.45mm_x000D_ 0.5mm_x000D_ 0.7mm_x000D_ 0.8mm_x000D_ 1.0mm 13mm_x000D_ 16mm_x000D_ 18mm_x000D_ 22mm_x000D_ 25mm_x000D_ 24mm 50mm_x000D_ 50mm_x000D_ 56.5mm_x000D_ 61.2mm_x000D_ 70.5mm_x000D_ 71.5mm 2.6m_x000D_ 3.3mm_x000D_ 3.9mm_x000D_ 5.2mm_x000D_ 6.4mm_x000D_ 7.7mm _x000D_ Flat Head with _x000D_ Middle Hole 1 x ST8*1.25 8mm 1.25mm 24mm 81mm 9.9mm _x000D_ 1 x ST10*1.5 10mm 1.5mm 30mm 89.5mm 12.3mm _x000D_ 1 x ST12*1.75 12mm 1.75mm 31.5mm 94.5mm 14.6mm _x000D_ 1 x ST16*2.0 16mm 2.0mm 33.5mm 103.5mm 19.2mm _x000D_ 1 x ST18*2.5 18mm 2.5mm 35.5mm 98mm 21.8mm _x000D_ _x000D_ Note: Please allow small size error due to manual measurement. Thanks for your understanding.