endurance for boxing training

[DannyD09]

i was wondering weather there is any steroids that would improve my endurance ive been on a sus decca and tren cycle and have aquired all the mass i need but my coach has told me my arms need to be cut down so i want something which will improve my endurance during training but wont add too much muscle any suggestions?

[Bonaparte]

600-800mg of EQ and 200-300mg test.

[DannyD09]

cheers mate