One of the LOC CUSTOM SERIES of kits, which feature factory pre-slotted airframe and through-the-wall fin construction and high power motor capabilities, The GOBLIN is the perfect kit to make your Level 1 and Level 2 certification flight with. 54mm motor mount. LOC-N-FIN/RING combo adds a strong and easy method of building. Construct the fin can outside the airframe and install OR use traditional building techniques. If you own a 4" LOC Goblin or any of the 4" MMAS 38mm/29mm adaptors, they will bolt right up! Kit inclusions below. DESCRIPTION Goblin 5.5" rocket kit Complexity: IntermediateDiameter: 5.5″Height: 56"Weight: 6lbsMotor Mount: 54MMParachute Size: 50" Ripstop Nylon ***Colors are random***Shock Cord Type: 18' 5/8" Tubular NylonShock Cord Mount: SCM3Fin Thickness: 1/4″Ring Thickness: 1/4″Instructions: No - LOC Custom KitVinyl Decal: Yes