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This is a Robostrut Ready Tri Gear Set with 3/16" 90° mains,5/32 wire 90° Rail Mount Nose, Robart 520W1 Retract Set with Air Kit.FEATURES: The 520 Series Retract offers a high performance air up andspring down.Steerable nose gearINCLUDES: 521W1 RetractsAir kit:-Small air tank-Two 3/16" wire landing gear-5/32" nose gear wire-Control Valve-Fill Valve-Air Supply in fitting-Three T-fittings-Straight servo horn-Orange air lineInstruction sheetREQUIRES: Air pump (ROBQ2363)ServoLink rod assembly to the Control ValveSPECS: Main Retracts: Length: 3-5/8" (92mm) including air cylindersWidth: 1-3/4" (45mm)Depth: 1-1/2" (38mm)Nose Retract: Length: 3-13/16" (97mm) including air cylinder)Width: 1-3/4"
Robart