For sale is my used Castle Creations BEC PRO Switching Regulator, not needed as I'm using the Align BEC on my 12 cell trex 600. Although it is used it is in very good condition.
Item Description
CSECCBECPRO-Castle BEC PRO Switching Regulator Castle BEC PRO
Key Features:
* Rated for up to 12S input (50.4 volts)
* Peak Output of up to 20 amps
* Fully adjustable using the Castle Link USB Adapter and a Windows PC
* Length: 1.69 in (43mm)
* Width: 1.3 in (33mm)
* Height: .94 in (24mm)
* Weight: 1 oz (29 grams) without wires
Overview:
The Castle PRO BEC is intended for use in larger RC cars, electric aircraft, and helis that have high power demands for their radio/servo systems. It is ideal for most electric helis 500-size and larger. It will also work well in larger electric powered RC aircraft and RC crawlers and Monster Trucks that have high-powered servos.

These are £36 new from Fastlads, I'll sell for £20 posted.
Fast Lad Performance
Item Description
CSECCBECPRO-Castle BEC PRO Switching Regulator Castle BEC PRO
Key Features:
* Rated for up to 12S input (50.4 volts)
* Peak Output of up to 20 amps
* Fully adjustable using the Castle Link USB Adapter and a Windows PC
* Length: 1.69 in (43mm)
* Width: 1.3 in (33mm)
* Height: .94 in (24mm)
* Weight: 1 oz (29 grams) without wires
Overview:
The Castle PRO BEC is intended for use in larger RC cars, electric aircraft, and helis that have high power demands for their radio/servo systems. It is ideal for most electric helis 500-size and larger. It will also work well in larger electric powered RC aircraft and RC crawlers and Monster Trucks that have high-powered servos.

These are £36 new from Fastlads, I'll sell for £20 posted.
Fast Lad Performance