4PCS Guitar Speed Control Knobs w/ White Skull Tone Volume Buttons for LP Guitar<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> They will fit most guitars， bass </span></li><li><span class="a-list-item"> Color: Black bottom white Skull+White Digital(Transparent Top) </span></li><li><span class="a-list-item"> Diameter:24.5mm-26mm </span></li><li><span class="a-list-item"> Hollow Shaft Diameter:6mm </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51gbvYhOVTL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41samMzQQxL.jpg" noproxy>