"Repeat customer here - I previously purchased Iron Age’s Celtic Knot knobs for my Ibanez S521, and I was so impressed with them, I decided to get these for my S670QM. I ended up liking the look of these better on my S521, and the Celtic Knots look great on the S670 instead! Point is, they are that easy to change, with a nice snug fit. These are high quality knobs with a hefty feel to them, and I love that the UV active indicator dot lets me know at a glance how my volume and tone are set, unlike the plain stock knobs. One thing to be aware of is that the Iron Age knobs are slightly taller than the Ibanez stock knobs for these two guitars - about 21mm versus 18mm on the stock ones. So on Ibanez guitars, make sure the tremolo arm is in the right position before doing any deeper dive bombs to avoid contacting the top of the knob."
Imperial Blue Guitar Knob (Single Piece, Individual Knobs)