This is the replacement Landing Skid Set for the Thunder Tiger X50 helicopters. FEATURES: White plastic skid braces Aluminum landing skids INCLUDES: Left and right landing skid braces Landing skids (2) End caps (4) Mounting screws SPECS: Length 12.2" (310mm) Diameter .35" (9mm) REQUIRES: Installation on heli COMMENTS: These replacement landing skids may vary slightly from the original parts on older helicopters. Minor modification may be required to fit the older machines. JMLM 2/1/11 ir/jxs updt jxs 04/09/12