These look great. Fire head has an excellent capillary effect for fuel traveling within the rope and to all edges. Each head comes with a robust stainless steel eyebolt that easily attaches to our range of cords. Heat resistant strong stainless steel eyebolts welded internally secure a total of 4800mm 16ft of 1 x 1/4 inch long life Kevlar tape. They are sold in pairs as shown in picture. Stainless steel quick links finish this universal cord set ready for attachment of glow sticks, practice balls, beaming balls or fire heads. The measurement you select will be from the top of the finger loops to the bottom of the fire head. Technora Rope does have a slight stretch over time, and as these are all hand made, some cords may be slightly over the shown measurement.