Dome Knobs for Alpha Mini Pots?

[Third Rock]

I purchased a prewired harness recently, and ordered Alpha 250K mini pots with it. Now, I'm looking for Black or Chrome Dome Metal Knobs for my Precision bass. It's a split shaft pot, and these are the dimensions:

• Pot Diameter: 5/8"
• Threaded Bushing Length: 3/8"
• Shaft Spline Length: 3/8"
• Mounting Hole Size: 3/8"

I've been looking online, but can't seem to find what I'm looking for. Most of them require set screws.
Please let me know where I can find what I'm looking for. I'd appreciate it!

[PhiDeck]

Uh, wouldn't one need to know the diameter of the shaft in order to select a knob?
One might guess it's 1/4", but one could be wrong.

[Third Rock]

Sorry, yes it is 1/4" for the diameter.

I believe I found the right press-on ones now:
http://www.guitarpartsresource.com/g...ldomeknobs.htm

Thanks!