Rotating bar stop for Gildemeister AS16, AS20, GS20, GM20, GM20AC, ideal for machines installed with the Cucchi Pietro IEMCA SIR automatic loader, as the bar stop rotates synchronously with the bar, preventing the bar from seizing with the bar clamp. Indispensable for those who use hexagonal bars, where there is often a continuous oscillation of the stop with the bar, causing a strong redundancy and causing false stops through the alarm "Bar stop out of position". Interchangeable with original HM pad 15.19.024