W Pro Series is So Far the Most All-Round & Cost-Effective Product on the Market. It has IP67 Waterproof, Rustproof, Anti-Fog and UV-Resistant, Maximizing the Service Life of the Gauges. W PRO Series Gauge is Designed with Convex Clear Acrylic Lens, Stainless Steel Bezel & ABS Plastic Housing. The Swiss Stepper Movement Provides Stable Performance. SIZES: 85mm (3-3/8"). Tachometer Fits Both Gas & Diesel Powered Engine. 2 In 1 Multi-Function Gauge Requires 12 / 24 Volt Negative Ground Systems. FEATURES: High Quality Stepper Motor Movement. IP67 Waterproof, Rustproof, Anti-Fog & UV-Resistant. FEATURES: Convex Clear Lens, 316 Stainless Steel Bezel & ABS Plastic Housing. Black Gauge Faceplate, Red Needle. White LED Illumination. FEATURES: Speedometer with Turn Signal & High Beam Function. Odometer Records to 99999.9 Miles on Total Mileage with Power Off Memory Function. Trip Meter Records to 999.9 Miles on Single Mileage & Resets to Zero When Power Off. PRODUCT DETAIL: Speedometer 0 - 120 MPH, Tachometer 0 - 8000 RPM. PACKAGED: 2 In 1 Multi-Function Gauge, GPS Sensor & Harness, Power Harness, Gauge Visor, Installation Instructions. One Year Limited Warranty For Non-Human Factor Damage & Free Lifetime Technical Support. KINDLY NOTICE: If You Need Gauge Mounting Cup, Please Purchase Our W PRO 85mm 3-3/8" Gauge Mounting Cup. ASIN: B0CXCQTNRL (Black) or B0D4DBTRJL (Silver).