Perixx PERIPRO-303GB Small Trackball 34mm Replacement Ball for Perimice and M570 Elecom Kensington Glossy Blue (18025) music_update_2021 Package includes: 1 piece bass

Package includes: 1 piece bass bridge and mounting accessories

Just the same size as an ordinary book

Adjustable The blood pressure pump has manual mode and adjustable function

designed for Acoustic Guitar

Perixx PERIPRO-303GB Small Trackball 34mm Replacement Ball for Perimice and M570 Elecom Kensington Glossy Blue (18025) music_update_2021 Package includes: 1 piece bassPerixx PERIPRO 303GB Small Trackball 34mm Replacement Ball for Perimice and M570 Elecom Kensington Glossy Blue (18025) Description A replacement trackball for your trackball mouse with a 1. 34 inch diameter. The ball was made of high quality material designed for major mouse brands in the market. Fits to trackball devices below: PERIMICE 517, PERIMICE 717, PERIMICE 520, PERIMICE 720,MX Ergo, M570, Cordless, TrackMan Wheel (not include Trackman