Made of good quality plastic material and finished by good technology. Size: ~2 1/2 inch x 2.2 inch x 2 1/8 inch (L x W x H) Color: white Weight: 264g This DC Voltmeter is specially designed for measuring voltage and monitoring battery & electrical system. 85C1-V Analog Panel Meter with accuracy of Class 2.5 can measure voltage between 0 V and 20 V. The 0~20V Panel Meter offers users great simplicity and easily reading. The 0~20V Voltmeter is low power consumption and long lasting. Package Contents: 4 x DC Voltmeter 8 x Screw Nuts 16 x Washer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.