These are currently very popular at the minute in the UK and from g4mshop (gear4mass). They're generic pharma grade Sustanon. Same blend 30mg Propionate, 60mg of Phenylpropionate and Isocaproate and 100mg of Decanoate testosterones. The amps are a little uneven in their contents. I often get between 0.8-1.0ml but you'll get the full 250mg dose. They're also more difficult to snap open so I recommend an amp snapper or a pen top. There's absolutely no doubting the quality. They're every bit as good as Organon Sus and the Zafa and Pharmatec factories (Pharmatec OBS hold the license in Pakistan to make Sustanon for Organon) are only a 7.5 mile drive from one another in Karachi!