Rivet Pop Gun 60 Assorted Rivets 4 Nozzles 3/32" 1/8" 5/32" 3/16" Riveter Kit Amtech B3400. With four interchangeable nozzles and assorted rivets. With safety catch. Sizes: 3/32" - 2.4mm, 1/8" - 3.2mm, 5/32" - 4.0mm and 3/16" - 4.8mm.