EASY TO USE- New "Toolless Quick-Change Head" design allows for easy changing of mandrels and nose pieces by handSTRONG AND DURABLE - The 16" rivet nut tool is made from thick carbon steel with heat treated, and black phosphating finishing protects against corrosion. U cross-section of arm is of high reliability to prevent getting bent. With designed structure and tough materiels it is sturdy and durable enough for long life performance.VARIOUS USE-CASE SCENARIOS - It provide professional solution for all kinds of riveting cases as metal plate, plastic piece, riveting workpiece, bicycle attachments, car attachments, decorations etc.COMPLETE ACCESSORIES & SOLID CARRYING CASE - Equipped with 13pc interchangeable mandrels(Metric M3 M4 M5 M6 M8 M10 M12; SAE 8-32,10-24,1/4-20,5/16-18,3/8-16,1/2-13) and 200pc rivet nuts (20 rivet nuts each for M3,M4,M5,M6;8-32,10-24, 1/4-20, 10 rivet nuts each for M8,M10,M12; 5/16- 18, 3/8-16,1/2-13.)Please note that the M8 mandrel was installed in the gun,so the small box of M8 is empty.All pieces are packed in a rugged, compact carrying case for storage and portability.WARRANTY AND SERVICE - Incase you are not satisfied with this product for any reason, or you have any question please feel free to contact us, we are ready to service you any time. Product Description Excellent Design:Simple using, effort saving, high reliability and comfortability of ergonomic design.Its design and long arm enable you to save 40% effort than normal rivet nut tool and experience a more comfortable way of work.Come with 13pc interchangeable mandrels and 200pc rivet nuts in a sturdy case, all ready for your project. Quick Changing Mandrels Tool-free quick-change head design make it simple to change mandrels and nose pieces quickly without the need for additional tools, smooth your project and save your time. Strong and Durable The rivet nut tool is made from thick carbon steel with heat treated finish which protect against corrosion and give this tool added durability and strength. Easy To Operate It makes riveting work so easy by just 3-4 simple steps. Organized Storage Solution All pieces are packed in a rugged, compact carrying case for storage and portability. Each tool fits snugly into its respective place to prevent moving around and scraping. Provide a customized fastener solution for wide riveting applications, such as body panels, bicycle attachments, furniture and decorations, especially for off-road / Jeep modifications. WARM TIPS: The tool is capable of over setting small rivnut as M3,M4 and 10-24 etc. When setting small rivnut, please apply less power on the handles and the arms of the tool do not need to come very close to each other, or the small mandrel can be damaged.The mandrels are consumable. Frequent or improper use would consume the useful life of them, and even damage them. The mandrels and replacements which are universal can be easily found in Amazon.Please be noted that the M8 mandrel are already installed on the tool, so the small box of M8 is empty.