WELLS GARDNER K4600 & K4700 B+ TRIMMER POTENTIOMETER 1K OHM. PCB layout is 5mm x 2.5mm. Vertical mount side adjust. VR501 and used on many other monitor chassis. This pot fits the pcb holes very well with little to no bending of legs. This pot is also a perfect fit and higher rated for the Sharp XM-1801N and Sharp XM-2001N B+ pot at R707.