Perixx PERIPRO-303X2K 1.34 inches Sports Trackball 2 pcs Pack for trackball Mouse - Basketball and Tennis Ball Design - Compatible for M570, M575, PERIMICE-517/520/717/720, and Others

REPLACEMENT TRACKBALL x 2 - Designed for any trackball mice using 1.34 inches (34mm) trackball size; Such as from
Perixx: PERIMICE-517, PERIMICE-717, PERIMICE-520, PERIMICE-720, Logitech: MX Ergo, M570, M575 Cordless (not include Trackman Marble), Elecom: M-XT3DRBK (EX-6), M-DT2URBK, EX-G/DEFT and
Sanwa: MA-WTB43BK etc... ^^ BASKETBALL AND TENNIS BALL DESIGN - The novelty design of basketball and tennis ball on the trackball. The quality and unique design of your favorite sports can be felt on your finger tip, and it provide a fun and different user experience on the work or at home. This is also a perfect gift for your love one who is the sports fan or hobby lover. ^^ GLOSSY FINISH - The glossy surface is treated with a special coating to provide a durable and smooth performance. With the multi-layer structure and particle insert, the trackball can provide a precise and long lasting operation for the desktop works. ^^ MATTE FINISH - The matte finish comes with a diameter of 1.34 inches (34mm) with the tennis ball; The variant of the matte finish model can provide a much more control in the precise pointing and movement, and it is an ideal model for the users with extensive documents and graphic related works. ^^ HOW TO USE THE TRACKBALL - Please remove the existing trackball from the trackball mouse with the finger or pencil from the bottom of the mouse, and insert the replacement trackball to the same location.

If the initial movement is not smooth, please remove it and rub the trackball for 15 to 30 seconds. All replacement trackball comes with a special protection coating, and it may disrupt the tracking of the sensor for the first time use.