Sucker rod standard:API 11B O.D:5/8",3/4",7/8",1",1-1/8" Grade:K,C,D,HY,HL,S-87 Length:25FT Sucker rod is among our leading products absorbing technical essence from home and abroad in accordance with API SPEC 11B,SY/T5029, applying the advanced technology in market and special material developed and anti-corrosion sucker rod, cooperating with international leading manufacturer to produce several ...