Comparison : Item # 1317-36-110, 1/8"-27 MPT Straight Ball Check Grease Fitting Steel
Item # 1317-36-110SS, 1/8"-27 MPT Straight Ball Check Grease Fitting 303 Stainless Steel
Item # 1317-36-111, 1/8"-27 MPT Straight Thread Forming Ball Check Grease Fitting Steel
Item # 1317-36-112, 1/8"-27 MPT Straight Ball Check Grease Fitting Steel
Item # 1317-36-113, 1/8"-27 MPT Straight Ball Check Grease Fitting Steel