Will this work on a 2 inch still column

It should. Fits the inside of 2" type L copper quite well.

what are the dimensions how about showinf descriptios and then i do not have to wait?

The top diameter is 2 13/64 " (56mm) the bottom is 1 7/8 " (48mm) The length is 1 " The hole is 3/8 " diameter

I have an antique 13 gallon carboy. the opening is 2” wide. which rubber stopper and airlock should i use? or should i do a blow off tube?

This rubber stopper #11 will fit your antique 13 gallon carboy. For the other 2 questions I would follow WisJim advise in his answer.

What’s the diameter of the center hole?

Thank you. The center hole is 3/8in diameter.

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Rubber Stopper- Size 11- Drilled

Product ID: 11962457

Details

Material
Rubber
Brand
RiteBrew
Color
Silver
UPC
696737337399
Global Trade Identification Number

📦0.4 lb weight

🔩Size 11

⚙️Drilled for airlock

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₩22937

Duties & taxes included

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Material
Rubber
Brand
RiteBrew
Color
Silver

Description

🔒 Seal the Deal with Confidence!

PERFECT FIT - Designed for Size 11 applications, ensuring a snug seal.
AIRLOCK READY - Drilled hole allows for optimal airlock functionality.
VERSATILE USE - Ideal for various laboratory and home brewing applications.
DURABLE MATERIAL - Crafted from high-quality rubber for long-lasting use.
LIGHTWEIGHT DESIGN - Weighs only 0.4 lb, making it easy to handle and transport.

This Size 11 Rubber Stopper features a drilled hole for airlock applications, weighing just 0.4 lb, making it a lightweight and essential tool for both laboratory and home brewing needs.

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