To install, simply screw it onto the threaded shaft for a snug fit. This versatile knob is designed for easy attachment and secure handling. The black finish provides a sleek look, while *32 copper core threading ensures durability and a strong connection. Ideal for a variety of applications, it offers both functionality and style. Whether you're replacing an old knob or adding a new one, this product is a reliable choice. Its ergonomic design ensures comfortable use, making it great for both professional and DIY projects. Enjoy the convenience it brings to your tasks. Features -Color:Black -Material:Plastic Copper -Size:3.20X3.20X3.20cm/1.26X1.26X1.26in -Versatile use: suitable for various joystick and controller models, this universal ball knob is an ideal replacement for wornout or knobs -Enhanced comfort: the smooth surface and rounded shape provide a comfortable and secure grip, reducing hand fatigue during extended use -High durability: constructed from robust materials, this knob is resistant to wear and tear, ensuring it remains functional and aesthetically pleasing over time -Quick and simple installation: designed for user convenience, this knob can be easily installed without the need for tools or professional assistance -great fit for 8 mm threads: engineered to fit 8 mm diameter threads, this knob ensures a snug and reliable fit for a variety of devices Package list: 2 pcs x 1 handle ball