This is replacement screen and digitalizer for Mach Speed Trio MST 9-21 android tablet. Used – tested – scratch and defect free.Like new condition. You are getting assembled lcd screen with touch digitalizer. Each unit is sealed.Seal must be present and readable water damage free in order to get refund or exchange no exemptions! This will work only with model MST 9-21 look on the back of your tablet if model number MST 9-21 is not there it wont work for you!!!! SHIPPING: US , HAWAII and Puerto Rico only – first class USPS unless priority option is selected.