This comprehensive pop rivet gun kit combines durable metal construction, tool-free quick size switching, ergonomic labor-saving handles and complete matching accessories, serving as a reliable fastening solution for household DIY repairs and professional workshop assembly jobs. The whole tool body is manufactured from high-strength die-cast aluminum alloy with heat-treated steel core components, delivering solid anti-deformation performance to sustain long-term repeated riveting without premature wear. Designed to lower operating effort, the curved ergonomic handle provides amplified leverage when squeezing, while the thickened non-slip PVC covering cushions hand pressure and ensures steady control for extended continuous work. Four interchangeable nosepieces covering 2.4mm to 4.8mm standard sizes can be swapped instantly without auxiliary tools; each nozzle carries clear size labeling, and dedicated storage slots on the riveter keep spare heads within easy reach to speed up size adjustments mid-project. The riveting mechanism operates intuitively: squeeze the dual handles to pull and secure rivets firmly, then release to eject residual mandrels automatically. Thanks to the quick-disassembly structure, any jammed mandrel can be cleared in seconds to maintain smooth workflow. The full package eliminates the need for separate accessory purchases, containing 200 assorted rivets, matching drill bits, a removal nozzle and a portable storage case to organize all components tidily.