This is labeled with the pharma company name.
yes, its a pull off top, i dont hink aluminium, its gold in colour, quite tough metal, maybe brass
I dont have the vials with me, at a mates, but ill put photos up tonight, just in case. Dosed at 250mg/ml.
Its good to hear it doesnt always hurt, i expected, maybe a dull ache or or slight bruising afterwards or something