ITEM NAME:6pcs 3F Hand Screw Thread Metric Plug Tap Set M3 M4 M5 M6 M8 #JT1 Product Description Description: Features 100% High quality and Brand new. Multicoated optics guarantee superior light transmission and brightness Ideal for auto repair and machinery where metric threads are specified Specification Material: High Speed Steel Wrench capacity: W1 / 16-1 / 4 "(M1-M8) Size: 3mm 4mm 5mm 6mm 8mm, Pitch: M3: 0.5 M4: 0.7 M5: 0.8 M6: 1.0 M8: 1.25 Included: 5 x Machine Screw Thread Metric Plug Tap 1 x Adjustable tap wrench.1 x Adjustable tap wrench. Wrench capacity: W1 / 16-1 / 4 "(M1-M8). Material: High Speed Steel. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.