A-B, A-D (leading edges = 13.375"B-C, C-D (trailing edges)= 14.75"A-C (spine)= 18.75"A-E (top bridle point)= 3.75" from topA-F (lower bridle point)= 13.75" from top5/64" fiberglass rod for B-E-D crossbow. Measure to fit (it will be less than 24", so two rods can be made out of a 48" rod.1/4" x 1/8" spruce or maple stick for spineBridle length should be approx. E-D-F