This is a Blast Deflector Plate for Model Rockets from Estes. FEATURES: Replaces that worn out deflector. Sturdy steel blast deflector. Fits 3mm and 5mm rods. Includes rugged rocket standoff. Complete instructions are included. INCLUDES: One Blast Deflector Plate. REQUIRES: Assembly Adult Supervision SPECS: Diameter: 5" (12.7cm) COMMENTS: Keep away from children under 3 years of age due to choking hazard.