Product Name: AISI 4140M Sucker Rod
Type: Sucker Rod
Standard: API 11B
Material: AISI 4140M, Alloy Steel
Size: 1-1/4 Inch
Length: 25 Feet (Customizable)
End Connection: One End Coupling


Source: https://www.landee.cn/aisi-4140m-sucker-rod-api-11b-1-1-4-inch-25-feet-custom.html