This is a Right Offset Main Gear Robostrut for 4 to 12 pound Sport, Scale, or Jet Aircraft. It Duplicates the Shock Absorbing Action of Full Scale Landing Gear. Smooths out Bumps & Hard Landings, Improves Ground Tracking, and Protects your Valuable Radio Gear from Shock Damage. FEATURES: Aircraft Grade Chrome-Moly Steel Construction Pre-Primed Gray Heat Treated Axle and Functional Torque Link Shock Absorber P-51 Style Offset Strut Low Weight of Only 1lb 1.3oz Each Can be Retrofitted to Most Retract Systems Scale or Semi-Scale in Appearance Replaces Wire Landing Gear INCLUDES: One 651R Right Offset Main Gear Strut Two 5/32" Adapter Bushings for Wire Struts Two 3/16" Adapter Bushings for Wire Struts Two 3/16" Diameter Axles w/E-Clip Four 4-40 Set Screws REQUIRES: One 2" to 2-1/4" Sized Wheel Low Heat Solder or JB Weld (to secure the adapter bushing) Threadlocking Compound (for securing set screws) Tools for Assembly COMMENTS: The Left Offset Strut to match this one is ROBQ1701.