Brand new and high quality These are continuous rotary encoder switch * Rotary Shaft Length: Approx. 12mm Shaft Full Length: Approx. 20mm Shaft Diameter: Approx. 6mm * Size (L x W): Approx. 15 x 12mm Output: 2-bit gray code Closed Circuit Resistance: 3 ohms maximums * Max. Rating: 10 mA at 5 VDC Operating Temperature Range: 30 to 70 degrees celsius Storage Temperature Range: 40 to 85 degrees celsius * Package Included: 10 x Encoder switch 10 x Nut 10 x Gasket Note: Please don"t store in the place of high temperature, humidity and corrosion. Don"t wet it.