52mm Pointer Tachometer 0 3000/ 4000 RPM With LCD Hour Meter For Car Boat Yacht Waterproof Tachometer Gauge With Red Backlight|Tachometers| - AliExpress
6000 RPM Tachometer 52mm Pointer 4000 RPM Tacho Meter Gauge With Red Backlight For Car Boat Marine Yacht RV 9 30V|Tachometers| - AliExpress
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Fanuc A06B-0235-B502 AC MOTOR AIS8/4000 AIA16M BRK 8NM STR/KY *1 YEAR WARRANTY* | General Servo & Spindle Motors