Material: Aluminium Alloy. Smooth and flat appearance without burrs, made of aluminium alloy. Deep and clear threads, uniform force, the screw threads are not easy to slip in the process of use. Thread Length: 16mm / 20mm / 25mm / 30mm / 35mm / 40mm / 45mm / 50mm / 55mm / 60mm / 65mm / 70mm / 75mm / 85mm / 95mm / 105mm / 115mm / 125mm.
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