Astro Pneumatic Metric & SAE 1451 10” Micro Hand Rivet Nut Setter Kit The Astro Pneumatic Metric & SAE 1451 10” Micro Hand Rivet Nut Setter Kit is a compact 10” sliding head rivet nut setter with a Toolless Quick-Change mandrel design. Unique sliding head design pushes against the rivet nut flange to set rather than pulling the mandrel, for more leverage and easier consistency. Includes mandrels, nosepieces and 10pc rivet nuts in: 10-24,1/4-20, 5/16-18, M5, M6 and M8. Mandrels and nosepieces in 10-24, 1/4-20, 5/16-18, M5, M6 and M8. 10PC rivet nuts each size.