What kind of pump?

[redrick]

Wondering what kind of cylinder everyone is using?

[buskowianka12]

Kind of typical designed to use with dick :X in the beginning quite sharp but managed to change it with emery board

[jdeesohs2012]

An average penis pump will do fine, however there are some sites that sell pumps specifically for rosebuds.

[bud111]

Normal penis pump is nice idea .....  

[M4rk]

I've started with a standard and cheap pump, 56mm inside diameter. Now, I use Pipedream Pump Worx
Accu-Meter Power Pump (PD3272-23). It's 63mm inside and 75mm outside. I like it for nice pump and pressure gauge.

[Melvin]

yes, normal penis pump (about 15 - 20USD) can do.

Use the pump which has rolled lip at the opening. (Not sharp edge opening).