How do I crack the bottle open

I have the 1cc vials of sustanon and deca. How do I open the bottle.
Someone told me you have to file it and then crack it open.
Someone told me to just crack the top off...
Need help

Just use a pen cap. Works everytime!!!!

use an amp opener, gpzs.com

Try the bic pen cap trick.

put a towel over it and snap it off

Howdy,

Score the neck w/ a needle file, wrap it in a wash cloth, and snap the neck off. Wipe it down with alcohol first.

Stengun