Check the listing for details. Rotary Encoder Digital Push Button Switch Audio Potentiometer Shaft 15mm/20mm. Condition: New. Listed at 2.02 USD. EC11 Rotary Encoder Digital Push Button Switch Audio Potentiometer 15mm/20mm Description: Potentiometer Plum Handle Shaft 15mm Potentiometer Plum Handle Shaft 20mm Potentiometer Half Shaft Handle Shaft 15mm Potentiometer Half Shaft Handle Shaft 20mm Number of pulses: 20 With switch: Yes Operating life: 50,000 times Maximum rating: 10mA 5V DC Package include: According to your choice. Payment: We accept Paypal only, It is fast, Easy and Safe. Shipping: We only accept your Ebay Address.Please make sure it is 100% right. Items are shipped via China Post Air Mail. Guarantee: Good quality. Buy with confidence! If you are not satisfied when you receive your item, please contact us before you return it. We will offer Full Refund to you when we receive your returned item. Any problem,please feel free to contact us. On Jun-04-19 at 00:08:49 PDT, seller added the following information: