Rubber backer pad 1.Backer pad thread: M14,5/8-11 3.Rubber backer pad for polisher 4.3,4,5 inch rubber backer pad Rubber backer pad Feature: Long life,durable We also can produce as your request ModelInch Diameter(mm)Threed XJMJT-001 3'' 80 5/8''-11;M16;M10,M14XJMJT-001 4'' 100 5/8''-11;M16;M10,M14XJMJT-001 5'' 125 5/8''-11;M16;M10,M14