Its locking system is superior to the standard non-lockable MAIN connector Currect/Voltage: 20A/250V Color:Power-in(NAC3FCA-1, Blue) / Power-out(NAC3FCB-1, Grey White) Lockable 20A/250V AC device coupler Linear, uncharged and pre-grounded three contacts Power input (blue) and power output (Grey White) have different lock keys to avoid short circuit Fast and convenient rotary locking system Ergonomic design Colour:Gray-white+blue Material:plastic Package Contents: 10 x PowerCon socket Only the above package content, other products are not included. Note: Light reflection 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!