This tube has a metal seal to preserve the paint longer. You can puncture the seal with the cap.
Length with cap: 8-3/4" or 222.25 mm
Please keep in mind there is about 1/2" (12.7 mm) of adhesive inside to help crimp the tube.
Diameter of nozzle opening: 1/2" or 12.7 mm
Diameter of the bottom opening: 1-1/2" or 38.1 mm
Due to a mixture of stock caps may be white or black.