The LHF 202 hand tool is was designed to install any rivet nut ranging in size from 6-32 to 14-20 (M4-M6). This tool is ideal for small production work, and prototyping. LHF 202 (Imperial Tool) includes: 8-32, 10-24, & 14-20 set ups LHF 202M (Metric Tool) includes: M4, M5, & M6...