R2B1 Lobster Cordless Rivet Tool 120V [3/32 - 3/16] Lith-Ion Battery, LED Spotlight, High-Speed Motor with Collector 18V. The R2B1 offers comfortable and ergonomic grip. It is compact and lightweight, it also delivers a 25mm stroke, but is capable of setting up to 3/16" high strenght blind rivets. Utilizing an energy efficient 18v lithium ion battery. The R2B1 also offers features including an LED spotlight to illuminate the work area and a mandrel collector to collect spent mandrels.