MDI # 6970. THE BARREL MAY HAVE VERY MINOR NICKS OR MARKS FROM TYPICAL USE OR DURING STORAGE FROM WHEN THEY WERE STILL ON A DRIVESHAFT BEFORE BEING REMOVED. THE CENTER PLUG MAY NEED TO BE RE-SEALED OR IF OLD EPOXY OR SILICONE IS STILL PRESENT IT MAY NEED TO BE RESEALED IF NEEDED PRIOR TO USE.