Working range Blind rivet nuts from M3 up to M10 of all materials and M12 aluminium and steel, blind rivet nut studs M4-M8 Technical data Weight: 1,25 kg Stroke: 6 mm The GBM 40-R is compact, functional and fast. With its compact design the tool sets blind rivet nuts up to M12. Furthermore the GBM 40-R has a great application access and low weight. The ratchet function provides a very good power transmission. The exchange of nosepiece and threaded mandrel is possible without any tool. Nosepiece and threaded mandrel are also compatible with the GBM 50.