BT5 BATTERY RIVETER KIT Introducing the Marson M38990 BT-5 battery rivet and tooling kit ... no bells, no whistles ... just the sweet sound of dependability!.The Marson BT-5 is among the best values you’ll find anywhere for industrial-strength, battery-powered riveters.Engineered for dependability on the factory floor or at the job site, the BT-5 delivers reliable performance at a fraction of the cost of other high-performance cordless riveters..The Marson BT-5 Kit includes nose tips for 1/8, 5/32 and 3/16 rivet diameters, BT-5 tool, carrying case, charger and battery. .An optional nosepiece allows you to install 3/32” rivets, as well. M38990