Features: Cast Aluminum Body - Steel Screw and Handle - High Strength and Light Weight Very Portable - Can be taken along and used Anywhere Great for Smaller Projects - Jewellery, Hobbyists, Crafts, Model Building, RC Cars and Planes, Electronics and Much More There is 2-3% difference according to manual measurement. Specifications:Body: Aluminum alloyWeight: 135gThreaded rod: 45 steel/7mm Package includes:1 x Aluminum MiniAture Clamp