Tinksky Aluminum Alloy Handle Expanding Hole Opener Reamer 0-14mm for RC Model Body Material: Aluminum Alloy. Handle diameter: about 14mm; Handle length: about 51mm. Total length: about 103mm. Reamed hole diameter: 0-14mm. Including a aluminum alloy safety cap. Aluminum alloy CNC handle with build in storage container for accessories and screws. Durable and exquisite-crafted. Suitable for all kinds of RC models.