42mm shape steel mounting

LED Motorcycle Digital Tachometer Tacho Speedometer RPM Gauge 2 Cylinder Package weight: 0.22 kg Description: Red LED Number Bright Light,Black background. General mechanical speed line interface. Waterproof & high performance design, please buy it with your confidence. Fits for all 1cylinder and 2cylinder motorcycles. Specification: Shell Material: Stainless Steel Shell Color: Silver Shape: circle Quantity: 1 pc Size: approx. 60mm(Diameter)x55mm(Height) / 2.36" x 2.16" Small Mounting hole diameter: 6 mm Large Mounting hole diameter: 10 mm 3 Wires length: 30cm / 11.81" Package size: 9 x 9 x 9 cm (LxWxH) Installation: Red=Postive,Black=Negtive,Green=Signal Package Included: 1 X Gauge,,,, Click here for more deals LED Motorcycle Digital Tachometer Tacho Speedometer RPM Gauge 2 Cylinder LED Motorcycle Digital Tachometer Tacho Speedometer RPM Gauge 2 Cylinder