Masteron Propionate 100mg (#540043) is often talked about in performance circles as a sharper, finishing-style injectable that experienced users link with harder, drier-looking phases rather than big scale-weight pushes. Listed in your Injectable Steroids category for Canadian customers, it’s framed as an informational-use-only option that tends to be associated with detail work—conditioning, polish, and structure—on top of an already lean, disciplined foundation.