Meaning of 19x17-18-19
In the description of a pump there are two values: 19 x 17-18-19 . The first number indicates the diameter of the piston. The second number indicates the lever center distance.
The 19 mm diameter is ideal for dual-disc systems.
The PRS 17-18-19 center distance is suitable for all uses as it is possible to adjust the center distance.
To choose the best center distance , keep in mind that, for the same force exerted on the lever, the greater the center distance, the greater the force required for braking.

The colored lever is articulated, long or short and with a lightening slot for the passage of air (RST) or without a slot (NRST). It is available in 7 colors.
All the pumps have a front register that allows you to adjust the distance of the lever from the handlebar as desired and with a very simple rotation