12 taps and dies: Our taps and dies set includes 9 taps and 9 dies, models are M3*0.5mm, M4*0.7 mm, M5*0.8mm, M6*1.0mm, M7*1.0mm, M8*1.25mm, M9*1.25mm, M10*1.5mm, M12*1.75mm, a tap twister and a twister ; High precision: The round die is designed with a tapered locking upper mounting hole. After the screws are aligned and locked, the locking force is strong , it is not easy to loosen, and the shredding is more stable and reliable. CNC fine grinding, precise threading and high precision, the die is marked with a model number that matches the slot for your convenience to find. Slip Thread Repair Tool: Taps and dies are tools for repairing threads. Tap reamer repair nut, reamer repair screw, the surface of the reamer handle has non-slip lines, the handle is stronger, the tapping is more stable, and the tap can be clamped stably, allowing you to use it easily and effortlessly. Durable alloy material: Our taps and dies are precision cast with thickened carbide, heat treated and tempered for strength and durability. With good impact and fracture resistance, higher stability, more standard sizes and full countersunk head taps, you can buy with confidence and use with confidence. Professional Repair Taps and Dies Kit: Our taps and dies are ideal for drilling and clamping in automotive and machinery repairs, and are the perfect set for professional craftsmen. Suitable for home installation, decoration, railway bridge construction, factory equipment installation, etc. If you have any questions about faucets, please contact us as soon as possible, we will answer you sincerely.