As an Amazon Associate, we earn from qualifying purchases. OS Engines O.S. Metering Needle (21M) R21GT | Tower Hobbies O.S. . OSMG7007 Attributes Brand name, Manufacturer name, ManufacturerO.S. Extra Product NameOS Engines O.S. Metering Needle (21M) R21GT | Tower Hobbies extendedQty, qtyInStock0 moq, multiple1 MPNOSMG7007 qtySourceupdateFromUrlEntry Distributor offers SellerSKUMOQIn stockMultiplePrices Tower HobbiesOSMG106011