Replacement trackball for perrix, black. Perfect for adding a touch of flair or changing the look of your 34mm trackball mouse, such as the MX Ergo or M575. - Diameter: 34mm - Weight: 30g - Brand: perixx - Color: Black Purchased about a year ago and used for about six months before switching to a different color. It has been stored at home since then (I am a non-smoker and have no pets). Since it wasn't used very often at home, it's in relatively good condition with no noticeable scratches, and the operability is perfect. However, it is a used item, so please check the images before purchasing. Please refrain from purchasing if you have any concerns. Please note that we do not offer discounts. Thank you for reading to the end. #perrix #perixx #trackball #mouse #logicool #Logicool