Novak XRS Brushed ESC.
Best ESC for Mardave racing as it has instant reverse so no waiting to get out of the barriers. Also has smart braking/reverse so it won't go into reverse while the car is still moving forwards.
Full spec is here
http://www.teamnovak.com/products/esc/xrs/xrs.html
Excellent condition, no damage to case/wires etc. Small crease in the label where it came up and was stuck back down.
£20 including postage and Paypal fees.