One of the ADVANCED SERIES of kits, which include factory pre-slotted tail cone and through-the-wall fin construction, the 5.38 V2 is our sport scale version of the infamous WWII German V2 rocket. This boat tail kit comes standard with a 38mm motor mount and flies great on H-180 through J-570 motors. (29mm motors require optional MMA-2 adapter). The 5.38 V2 is a great performer on a variety of motor packages from Level 1 to Level 2. We upgraded the shock cord to 25' of 9/16" tubular nylon and added a CEC-2 chain connector to the SCM3 shock cord mount for heavy duty flying Parachute Recovery. Complexity: Entry LevelDiameter: 5.5″Height: 48"Weight: 4lbs.Motor Mount: 38mmParachute Size: 50″ Ripstop Nylon**Colors are random**Shock Cord Type: 25' X 9/16″ Nylon with sewn loopsShock Cord Mount: SCM-3MR-1 motor retention10 series rail guidesrecovery blanketFin Thickness: 1/4″Ring Thickness: 1/4″