Matched 37mm diameter black phenolic resin control knob with spun aluminium skirt and inlay. * Supplied with arrow indication * Depth 15mm * Grub screw fixing for 6.35mm (0.25in) spindles https://elecena.pl/product/27199066/sci-rn-114b-arrow-control-knob-37mm 2024-11-09 https://elecena.pl/product/27199066/sci-rn-114b-arrow-control-knob-37mm 2026-07-04