Compact design and are characterised by the Micro XS blocks from Sprenger for relatively large working or breaking loads. To achieve a high working and breaking load, Sprenger uses steel side elements on these trestles. In addition to the side elements, all sprenger blocks of this Micro XS series a stainless steel ball bearing, this affects both the bearing shell and the balls. The breaking load has been determined at 450 kg and as a working load Sprenger recommends 112 kg. The actual pulley is made of high quality UV-resistant plastic. The dimensions of the plastic rope rollers of these blocks are diameter 19 x 8.3 mm. The design of the blocks is very appealing, which is mainly due to the combination of plastic stainless steel, and the design is of high quality, as is known from Sprenger blocks. The blocks are made by means of tumbling riveting, which prevents sharp burrs on the rivet head, thus preventing injuries at these points. The Micro XS series is made entirely in Germany by Sprenger.