Nylon Twist-Lock in-line fuseholder. Supplied with 8" loop of 14-gauge wire and one spring to accommodate AGC fuses. Simple "twist-lock" allows easy fuse removal and replacement.
This seems like it is decent quality, but it is not aviation specific and has regular/commercial copper 14ga wire coming out of it with a rather thick jacketing. If youre connecting a thinner wire (e.g. 20ga) note this 14ga wire thickness as youll need to step it down.