These Robart #675 Fixed Gear Robostruts are designed for use with the Top Flite Giant Scale P-51 Mustang, but these offset 1/2" diameter struts can be used with many different planes weighing up to 25 lbs and cut to various lengths. For use on grass or paved airfields. * Features: constructed from TST certified, aircraft grade materials coated flat gray welded and heat-treated components 1/2" diameter functional "oleo" action struts for smoother take-offs and landings stylish offset stuts that accept up to a 5" diameter wheel anti-torque clamp-style mount that allows for toe-in & toe-out adjustments * Includes: One pair of Robostruts (one left-offset and one right-offset) One pair of Robostrut mount brackets with cap screws and lock nuts for clamping onto struts + + more + + Includes (contd): Two 1/4" diameter x 2 1/4" long bolts used as axles Two 1/4" id thin washers Two 1/4-20 jam nuts * Specs: diameter of struts: 1/2" (will handle up to a 25 lb plane) wheel size: up to 5" axle diameter: 1/4" overall strut length to center of axle: 9 5/8" length of strut to offset: 6 7/8" (can be cut shorter) length of offset: 3" (offset sticks out 1 1/4" from centerline of strut) * Requires: Hardware to mount the mounting brackets to the wings of your plane is NOT included. You"ll need eight 8-32 screws (two packs of GPMQ3044-GPMQ3052 depending on length you need) and eight 8-32 blind nuts (two packs of GPMQ3328). 5-14-98 NMHRobartPart ROB675