... 11B Sucker Rod, grade D, SIZE:5/8", 3/4", 7/8", 1", 1-1/8", API APPROVAL MANUFACTUER YUNSHENG API 11B Sucker ... Rod, grade D, SIZE:5/8", 3/4", 7/8", 1", 1-1/8", API APPROVAL MANUFACTUERYantai Yunsheng Grade D sucker ... .8827.228.528.2——3/4"19.0538.540.039.8——7/8"22.2352.053.853.5——1"25,4069.972.571 ... .9——1-1/8"28.5888.791.8———— API SPEC 11B Sucker Rod ...