The pneumatically operated MKS series is a safety component. The pneumatically operated MKS series is designed for clamping on linear guideways. The function is based on a dual-acting wedge gear with a spring mechanism. The spring mechanism ensures that the clamping element is closed without pressure. The holding forces can be increased by means of a PLUS connection (not for MKRS), provided this is listed in the technical data, by pneumatic pressure support of the spring mechanism. The elements are factory-set to the respective rail dimensions.