COMPACT HEAVY DUTY RIVET NUT FASTENING TOOL aluminum alloy body and stamped sheet metal handles makes it a light weight and durable tool features patented Omni-Mandrel System Length：270MM Aluminum, Steel：#8~3/8”, M4~M10 Stainless Steel (inox)：#8~5/16”, M4~M8 Body：Die-casted aluminum alloy Handle：Stamped sheet metal Fixing Screws：Heat treated alloy steel