7-Sided Knobs - Black / White - 6.4mm hole 1/4" Shaft - Guitar Pedal Amp Dial
It features a compact design and a strong brass fixing insert. Shaft FixingGrub Screw. Round Hole Knobs. Shaft TypeRound. Minimum Shaft Depth6.4mm. Maximum Shaft Depth8.2mm. Hole Size6.4mm. Splined Hole Knobs.