Hydraulic Excavator Cab with Air 31.5" Track Shoes 10'6" Arm 36" Bucket HKX HYDRAULIC THUMB INSTALLATION KIT, FOR KOMATSU PC290LC-11 EXCAVATOR, S/N A27295, EQUIPPED WITH 10'6" ARM. KIT INCLUDES: DOUBLE DIRECTION FLOW, JOYSTICK CONTROLLER, 4-BOLT FLANGE TUBING, HIGH FLOW SUPPLY LINE, HIGH PRESSURE 5000PSI RETURN AND SUPPLY LINES, EXTRA HIGH FLOW RETURN LINE, THUMB CYLINDER ATTACHMENT HOSEA/MANIFOLDS. KIT IS UPGRADEABLE DESIGN (KC2447). (kit serial number H81395)