This plastic turning knob from Mentor has been designed for professional equipment and comes with collet fixing. Stylishly designed with a moulded on pointer, matt anodised body and knurled grip. * Knob Ø: 15mm * Axle Ø: 6mm * Height: 20mm * Colour: Black * Manufacturer's part 4310.6131 Note: Cap not supplied. https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2025-01-22 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2025-06-27 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2025-07-16 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2025-08-26 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2025-11-18 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2026-04-07 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2026-06-14 https://elecena.pl/product/27736481/mentor-4310-6131-plastic-turning-knob-matt-with-collet-fixing-xd8-15mm-black 2026-07-07