This is a Two-Piece 3/16" Maxi Launch Rod for Model Rockets from Estes. Suitable for Ages 10 & Older with Adult Supervision for Those Under 12. FEATURES: Extra strength and stiffness for larger rockets Heavy duty launch rod for "D" engine, and heavy rockets Includes safety cap Fits all Porta-Pad launch pads INCLUDES: One two-piece 3/16" (5mm) rod One safety cap Complete instructions SPECS: Length: 35" (889mm) Diameter: 3/16" (5mm) COMMENTS: Due to small parts that could cause a choking hazard please keep away from children 3 years of age and younger For your safety and enjoyment, always follow the NAR Model Rocketry Safety Code while participating in any model rocketry activities sdw 10/03/01 ir/kh udpated tlc 1/8/13