Chuck is normally 5" long for a big'un + caps.
Add another 1 1/4 in for the carto itself, and a total of 2.1 inches for carto+drip tip. All in all it's like 7.1in long.
Add another 1 1/4 in for the carto itself, and a total of 2.1 inches for carto+drip tip. All in all it's like 7.1in long.