Product Information: Model: synchronous wheel Number of teeth: 15-40 teeth Tooth shape: circular arc Pitch: 3mm Slot width approximately: 7mm Total thickness approximately: 11mm Appearance: AF type (flat on both sides) Top thread: 2 * M3, 2 * M4 Material: Aluminum alloy, the baffle is galvanized iron Inner hole: 5/6/7/8/10/12/12.7/14/15/16mm
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