CROSS CONNECTOR-INSERT FITTING for use with 3/8 inch tubing part# 66PN. 0742-006Cross-type Hose Connector Insert | 1/4in I.D., AcetalThe 0742-006 cross-type hose connector insert fitting features a 0.250-inch inside diameter and made of lightweight Acetal material. Product CodesMfr Part No:0742-006E..