Aluminium alloy products, with the use of countersunk screws, you can use countersunk screws on the teeth holes without countersunk grooves, beautiful and practical. Size：M6 D18 4mm M6 D19 4mm M6 D24 4mm M6 D24 5mm M6 D22 8mm M6 D35 5mm M8 D20 5mm M8 D24 6mm M8 D35 6mm M10 D30 6mm.
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