CST Tube 16 x 1.75/1.95/2.125 AV 40

CST is a brand offering high-quality bicycle tires. The high standard of workmanship is evidenced by the fact that CST is one of the world's largest manufacturers of bicycle tires.

CST Butyl Bicycle Inner Tube

• Inner Tube Size:16” x 1.75-2.125 (305 x 47-57)

• Wall Thickness:0.87 mm

• Weight:93 g

• Valve:AV 40 mm

AV / SV / CAR valve, 30 mm long, fits bicycles with reinforced, flat tires. rim.

AV valve, the so-called Schrader valve, or car valve - the most popular valve installed in inner tubes. These tubes can be inflated with a car pump or at gas stations using a compressor. (Valve diameter: 8 mm)

ETRTO is the European Tyre and Rim Technical Organization. The ETRTO size is the best size to check whether the inner tube you are buying has the same dimensions as the one you currently have on your bike.

These are numbers written on the tire in the same format as the code postal code, for example 32-622. This means that the tire is 32mm wide and fits a 622mm rim. Therefore, the inner tube we are looking for must have a diameter of 622 and a width appropriate for our tire.