The GDHK (bronze bushings, for heavy loads) and GDMK (recirculating ball bushings, for high speed) guide units ensure precise alignment and anti-rotation for pneumatic cylinders. They can be used alone or combined, with V-Lock dovetail profile for assembly with other elements. Compatible with ISO 6432 Ø12-25, ISO 15552 series 3 Ø32-40, ISO 15552 STD and type A Ø32-40 (no sensors), and Elektro ISO 15552 Ø32 anti-rotation cylinders. Available with 5 end-stop options: none, elastic stops (retraction or both strokes), or hydraulic dampers (retraction or both strokes).