The Twist-and-Suck cylinders are incredible but we had many request for other sizes. Now we managed to get our hands on these ones, which are available in four different sizes. Another advantage is that they’re cheaper as well…

Available with the following internal diameters:

0.75 inch = 18 mm

1.00 inch = 25 mm

1.50 inch = 38 mm

2.00 inch = 50 mm

We sell them in pairs.