This Plastic Holder Set offers replacement parts for the Aluminum Servo Mount.Features:Molded composite frame adds stiffness to the aluminum servo mount assembly and holds the servo mount screws in place - Molded composite servo mount spacers in 1mm and 2mm thicknesses included to fine tune servo mounting heightIncludes:1 x Composite Servo Mount Frame 2 x 1mm Servo Mount Spacer 2 x 2mm Servo Mount SpacerRequires:Spare part for #ARA320574 Can used as a complete set comprising of: #ARA320649 #ARA320650 #ARA320651 #AR722208 #AR723312