BYOP! What? Yes! Build your own model rocket parachute. 1.9 oz Rip-Stop Nylon parachutes with holes for you to tie a knot. Or sew yourself! Just like the plastic versions most of us have used before, only with nylon materials. All nylon is heat welded to prevent ripping. A low cost but durable option for TARC teams and testing. Available in sizes from 12-24″ diameter. All lines included and have a tensile rating of 95#s.