Check the listing for details. Guitar Control Knobs Flat Top Volume Tone Knobs 6mm Shaft Screw Type Metal Black. Color: Black, Condition: New. Listed at 11.99 USD. Oletone Metal Guitar Knobs Flat Top Control Knobs with Black Knurled Barrels 6mm Split Shafts Volumn Tone Screw Type for Tele Strat Style Electric or Bass Pack of 4pcs. Product Description These knobs are made from solid metal and are suitable for most electric guitars or bass guitar, including Fender, Squier, Ibanez, PRS etc. A simple grub screw on the side of the knob is used to secure the knob in place. These push on control knobs can be pushed into a 6mm diameter(imported guitar mostly, may not fit for the 1/4" shaft) split shaft that suitable for the tone and volume on the guitar. They measures 19mm(3/4") tall and 19mm(3/4") diameter, fits metric (import) 6mm(.236") solid shaft pots. All metal material without plastics inside, excellent quality, heavy duty for a lifetime of use. If your knobs are dirty, dingy and old, or just want to dress up your guitar...these will work. Feature Solid metal construction Dimensions: 19mm x 19mm(0.75'' x 0.75'') Black tone or volume knob for guitar or bass 6mm inner diameter, fits for 6mm(1/4") diameter shaft of domestic potentiometer and metric potentiometer 4pcs flat top knobs with coarse knurl on the sides Note Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please when you have problem with the item before leaving feedback, we will try our best to serve you as soon as we receive your message.