Anticold tube for slingshot is especially produced for shooting under extreme cold temperature.
Dankung tubing model Explaination:
First two digitals divided by 10 you will the the inner diameter.
Last two digitals divided by 10 you will get the outer diameter.
For example,model 1745 means ID 1.7mm and OD 4.5mm.
From one of the images, you can see the tension of different sizes and configurations.