Up for sale is a lot of 16 rca pants/jackets/splitters that is also great for cleaning up installs. These are small jackets designed to fit snuggly. The size of the input is 7mm (I like to use metric for measurements since it takes away the complexities of fractions) and the outputs are 3mm. Please please please make sure that this works for your install, as the 16 gauge speaker wire I've tested won't fit in here (but the 18 gauge I tested did shown for reference, which would make these great for 18 gauge speed wire). I also tested a pair of 22 gauge rca bunched on 1 side of the output for building 2 channel rca cables and they didn't work (I don't have any 24 or 26 gauge, but those likely would). Point being is that these are small input and output splitters, make sure your install measures up. Check out my other listings for other hard to find tidbits. I combine shipping if you're mixing and matching other items and it's all shipped together. Happy listening!