Check the listing for details. Kluson Stop Tailpiece Post Stud Set, Steel, US 5/16-24 Thread - Chrome. Condition: New. Listed at 7.47 USD. Kluson USA® standard stop bar stud set with 5/16-24 US Imperial thread made in steel for added strength and tone benefits. Partners with all US threaded Kluson® bushings. Bushings sold separately. Specifications Thread: 5/15-24 US Imperial Material: Steel Stud Cap Size: 13mm/.5in Thread Length: 0.781" Made in the USA Kluson SKU: KSTPSS781-C Note: These components are designed to work with the existing threaded inserts in the body of your guitar. There are two different threads for the inserts that could be in your instrument; metric and US standard thread. If you are unsure as to the thread of the inserts in your guitar, please contact the manufacturer or a local luthier. If for some unusual reason your components don't fit or don't screw in easily, DO NOT FORCE THEM. Professional installation is strongly recommended. Improper installation may result in damage to the product and/or instrument.