Cliff FC7225B KM20B Black Aluminium Clad Plastic Knob - Marker Lin...

Cliff-KM20B-Black-Aluminium-Clad-Plastic-Knobs-for-6mm-Splined-Shafts-Cliff-FC7225B-p-A-black-aluminium-clad-plastic-knob-with-an-attractive-professional-finish-The-black-anodised-body-is-relieved-by-bright-diamond-cut-features-with-a-knurled-finish-around-the-side-The-knob-has-a-marker-line-for-positioning-p-Cliff-FC7225B-KM20B-Black-Aluminium-Clad-Plastic-Knob-Marker-Line-6mm-Spine

Price: 1.40 from Rapid Online Rapid Electronics Ltd.