There is no set steroid for cut and bulk. I know guys that cut on Anadrol and even do contest prep with 25mgs of anadrol included. There are some basic guidelines. Steroids that aromatize are traditionally known to be bulkers while DHT based Steroids that don't aromatize are known more for being associated with cutting stacks. 19-Nors like Tren, Deca, or NPP can be used for Either cutting or bulking. Short esters are more commonly used for Cutting cycles but this no rule. Long esters are typically associated with bulk cycles but once again no rule. Do some research. Since Testosterone is the base for any cycle start there.