The FLZOSPER 155PC Hand Rivet Nut Tool Kit is a must-have for any DIY enthusiast or professional. With 14 interchangeable mandrels, including both metric and SAE sizes, this tool allows you to complete a wide range of projects with ease. Made from thick carbon steel with heat-treated and black phosphating finishing, this tool is built to withstand the test of time. The U cross-section arm ensures high reliability and prevents bending, providing you with a durable tool for long-lasting performance. The innovative mechanism allows for toolless operation, making it quick and easy to change the head. The inner threaded base and hex sleeve firmly lock the mandrel during riveting, ensuring a secure connection every time. Whether you're working with metal plates, bicycle attachments, or car attachments, this professional nutsert tool kit is the perfect solution. It comes with a rugged carrying case to keep everything organized, along with a 140pcs rivet nuts assortment kit. We are confident in the quality of our product and offer a 100% satisfaction guarantee. If you experience any manufacturer defects, we will provide free replacements to ensure your complete satisfaction. Upgrade your toolkit today with the FLZOSPER 155PC Hand Rivet Nut Tool Kit.