Polishing Powder For Phone Screen Glass Back Cover LCD Repair Grinding Machine Abrasive Tool

1, 4 head or 8 head models for polishing machine , one is black which need external air compressor , another is the white model which has built-in compressor 1, Two models for polishing machine , one is black which need external air compressor , another is the white model which has built-in compressor 2, Both 110V/ 220V available 3, Machine comes with a list of accessories , pls check details below