Vaccum pump cylinder sizing question

I’ve been using a vacuum extender that I purchased from AliExpress, I ordered parts from various stores to replicate the Penimaster extender for a fraction of the price. After many trials and errors, I’ve found the perfect setup. It’s comfortable enough to wear for hours on end with no discoloration or discomfort, able to maintain vacuum with no slippage.

I’m going on 5 weeks, 10-12 hours per day.

My measurements are
BPEL: 6”
Thickness: 4” 5/16

I’ve seen a huge improvement in erection quality, morning wood lasting much longer than before starting using the extender.
I want to add vacuum pumping to my routine for girth gain. I purchased a vacuum system on Aliexpress equivalent to the LeLuv Ultima for half the price, it arrived today and I’m impressed with the build quality.
The recommended cylinder size for my measurement is 1.50”. I ended up ordering the 1.75” as it was the smallest cylinder that was available.

Can I start with the 1.75” cylinder or should I track down a 1.50”?

As long your balls/balls sack doesn’t pulled in you are good.

1.75 cylinder is recommended for 4.75 - 5.25 girth. However, as mentioned above, it can be used on less girthier dicks if you don’t have ball suck in. LeLuv offers cylinders for about $30.

Hi yes you can start with 1.75. by the which vacuim extender you bought from aliexpress? I texted you in your PM. Please check

Thanks