90° Brass water fitting with 2.6 mm- 2.9 mm water passage hole. The stock Castle fittings are 2mm. This is a direct replacement fitting for Castle Creations Hydra 8S, XLX2, Cobra esc's. See picture #3 for two of these installed on a Castle Creations Hydra xlx2 Esc. Includes: (1) per package Measurements: See picture 2, Thread size: 10/32 Requires: Threadlocker. The glue will be used to lock in the specific angle you require and for waterproofing.