Available Screw Thread Sizes:M2, M3, M4, M5, M6. Male Female Thread Bolt Screw Reducer Fitting Adapter. 0.7mm(M4 ). 0.4mm (M2 ). 1.0mm(M6 ). 0.8mm(M5 ). 0.5mm(M3 ). These thread adapter are useful where thread size of screw needs to be reduced or changed.
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