Kmise MI0314H4 Blue 0-11 ABS Top Hat Bell Knob Guitar Volume Tone Control 6mm， 4 Pieces<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Material: Plastic with acrylic transparent dome </span></li><li><span class="a-list-item"> Color:  Blue  with white  Arabic numerals scale </span></li><li><span class="a-list-item"> Central Hole for pots is approx. 6mm diameter </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41rsLxxzabL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41aoWpVlWbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41juC%2B9QH7L.jpg" noproxy>