Used with wear and tear. Still works however would benefit from a service. 90% cartridge but may need cleaning like this https://www.youtube.com/watch?time_continue=2&v=YNjYPgF_RrA&embeds_referring_euri=https%3A%2F%2Fwww.bing.com%2F&embeds_referring_origin=https%3A%2F%2Fwww.bing.com&source_ve_path=Mjg2NjY&feature=emb_logo