ACG Watertight Inline Dual Fuse Holders feature a snap tight connection for use in wet or semi-wet locations. Includes standard 1/4" x 1-1/4" 10A, 15A, 20A, or 30A glass fuse and an extra emergency fuse. Fuse holder has a specially designed case that is molded with a second fuse pocket for convenient access to a spare fuse. Wire gauge from 10-16 AWG. Constructed of injection molded PVC.