Comparison : Item # 1317-36-120, 1/8"-27 MPT 90 Degree Ball Check Grease Fitting Steel
Item # 1317-36-120SS, 1/8"-27 MPT 90 Degree Ball Check Grease Fitting 303 Stainless Steel
Item # 1317-36-121, 1/8"-27 MPT 90 Degree Ball Check Grease Fitting Steel
Item # 1317-36-150, 1/4"-28 Tapered Thread 90 Degree Ball Check Grease Fitting Steel
Item # 1317-36-150SS, 1/4"-28 Tapered Thread 90 Degree Ball Check Grease Fitting 303 Stainless Steel