Premium Material: Crafted from high-quality 45# carbon steel, our roll pins are designed for durability and strength, ensuring a reliable fastening effect. The black oxide finish enhances their resistance to rust and corrosion, making them suitable for various environments. Product Feature: These hollow fasteners are engineered to expand under force, featuring chamfered ends that allow for flush installation within holes. This design minimizes the risk of accidental damage, making them ideal for precise positioning, connecting, and securing components. Exquisite Storage Box: The roll pin assortment set is neatly organized in a robust storage box that can withstand the weight of the entire set. Each compartment is clearly labeled, allowing for quick identification of the required size, streamlining your workflow. Wide Applications: Perfect for both commercial use and home improvement projects, these split pins are essential for constructing and maintaining fixtures and appliances. They are also valuable in automotive repairs and various industrial applications. 370 Pcs Roll Pin Assortment: This comprehensive tool set includes 370 slotted spring pins in the most commonly used SAE sizes?ranging from 1/16 to 3/8 inch?equipping you to tackle a diverse array of fastening tasks with ease. 370-PIECE SAE ROLL PIN SET 10 Different Sizes The 370-piece spring pin set includes 10 essential sizes for fastening machine components, ensuring versatility for any task. Designed with a slit lengthways, each spring pin features chamfered ends, providing a secure fit that holds fast within its intended hole. Constructed from structural-grade carbon steel with a blackened finish, these pins offer superior strength, durability, and resistance to corrosion. The roll pin assortment comes in a transparent plastic storage box with clearly marked size labels, facilitating easy access and organization of your tools.