Upgrade your joystick or gear shift with this ball knob, designed for universal compatibility. Its ergonomic shape ensures a comfortable hold, making it ideal for extended use. To install, simply screw the knob onto the threaded shaft of your joystick or gear . This knob is great for arcade game DIY projects. Features -Color:Black -Material:Plastic Copper -Size:3.20X3.20X3.20cm/1.26X1.26X1.26in -Broad compatibility: this universal ball knob is suitable for a variety of joysticks and controllers, making it an ideal replacement for multiple devices -Enhanced grip: the ergonomic design and smooth surface provide a comfortable and secure grip, enhancing your control and precision during use - build: constructed from plastic and copper materials, this knob is designed to withstand longterm use without significant wear, ensuring durability -Easy to install: the knob features a installation process, allowing you to replace your old knob quickly and easily without any special tools -Fits 8 mm threads: specifically designed to fit 8 mm diameter threads, this knob offers a secure and stable attachment for a wide range of applications Package list: 1 handle ball