Astro Pneumatic Riveter Click HERE for more information! Includes the following nosepieces: 1/4-inch(6.4mm), 3/16-inch(4.8mm), 5/32-inch(4mm), 1/8-inch(3.2mm), 3/32-inch(2.4mm), 3 Nose pieces are screwed onto the base. Powerful durable, high speed production tool. Quick release air valve permits cylinder to return quickly for high speed assembly operations: Prevents overloading for long life. Performs well at any angle. Pulling Pressure - 2423 pounds.