The D-ring Part of your Graflex lightsaber.
The d-ring is what holds Luke lightsaber to his belt in Star Wars. There is no Known evidence as to what type of d-ring was used in the movie on the graflex. There is a lot of speculation as to the size and such of the d-ring but confirmation as to the size and waht it really looks like as yet to surface. The d-ring that are available are often fan made using the best estimate based on photos of the movie. However it is known that the d-ring is placed in a very specific way at the bottom of the lightsaber.