Features: Make of Metal, which is strong and Enduring, not easy to break or deforms, and can be used for a long time. The cylinder Jacks have 3 total prong. Great output Jacks replacement for acoustics and electric guitar, bass. Equipped with 6.35mm/2.5inch Jacks, the endpin can work with most standard cords. Easy to install, no need to use screws for fixation, suitable for most electric guitar, simple and easy to use. A good Jacks will hold the plug tighter, reduce guitar noises, increase output power and extend service life . Specifications: Materials: Metal Size: about 35x14mm/1.38x0.55inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 5pcs Electric Guitar Plug Outlet