Check the listing for details. Genuine Tone Ninja Tuner Spares - Locking knob, Black 22mm. Color: Black, Condition: New. Listed at 7.55 USD. Genuine Tone Ninja Tuner Spare Parts - Locking knob, Black, 22mm Manufacturers Part Number: TN-P-LTW22B A spare locking knob or thumbwheel for Tone NInja locking tuners. Use these as spares or to customize the color combination of your genuine Tone Ninja locking Tuners. Available in all locking tuner finishes (Black, Black Nickel, Chrome, Gold, Nickel and Satin Chrome) and three lengths (22mm for long post, 20.5mm for medium post and 19mm for short post) Long post are used in all 3x3, 4x2, 6 Inline non-staggered, and all 7 & 8 string sets. Medium and Short posts are only used for medium and short posts in staggered sets. Buy with confidence from SportHiTech, an authorized Tone Ninja Dealer. All products are factory fresh and in original retail packaging, and carry a limited lifetime factory warranty.