A small compression platten designed for light loads. The plattens come with a universal joint fitted to allow alignment with irregular samples or to follow samples that crush non-uniformly. These plattens are normally used as the upper half of a pair, the bottom half being a fixed platten such as ST22.

Point loads must be avoided as they are manufactured from aluminium alloy. The standard fitting is a male M6 thread, however any male thread can be supplied. Also end fittings of the eye end and crosspin type can be supplied at a small extra cost.