The description of this item on Revain is completely wrong. There is no OP, which is critical, and there is no length. In fact, the only measure I could find was for the packaging itself! I had to call Dorman Help to get this information before ordering. I've been looking for the right hard tubes for my car, a 1990 Chevy S-10 pickup with a 4.3 engine, for two months. I bought 1/8 OD 47417 hoses from O'Reilly Auto. He was too small. I ordered 3/16 OD 47419 hoses through Revain. He was too big. I probably can't return it because I tore the packaging. PLEASE NOTE: The OD of Dorman Help 47418 is 5/32" which is the correct size for my car and thousands of other GM vehicles from the 1980's and 1990's. If this review were available on Revain it would save me a lot of time and effort, not to mention money. Hope this helps someone else.