This is a little sleeve that fits JST-XH connecto typically found on balance port of LiPo battery used in RC models. My finge are too big to grip on the little flange and the cables are extra thin. I wasn't too confident handling them. The 3S sleeve is barely 2g in weight (using classic PLA) so it's an acceptable price for the comfort and safety it gives me. It takes about 15min to print the two sides of the sleeve together (20min for the 7S veion). The 3mf file contai 1 set for each size from 2S to 6S. I also provided the FreeCAD file if you need bigger a sleeve. This work is ipired by EDIT: added 7S veion. EDIT2: Gosh I love them :D DISCLAIMER: The part is provided "as-is," without any express or implied warranty. In no event shall I be held liable for any damages arising from the use of the part. Always be extra careful when handling batteries.