... saucer ballMaterial Stainless steel , carbon steel , bearing steel and so onSize ( mm)2.5*3.5 , 3 ... .5 , 5*7 , 7*10 , 6*8 and so onGrade G10 - G1000Application Flying Saucer ball, which looks ... or UFO dish, is widely used for hardware defects polished, especially for irregular workpiece polished.packagePallet , wooden ... 82 China good quality Satellite Balls for polishing and grinding ( SGS approved )