The KUKKO Quality Tools 70-4734 Trigger Hook Set is designed for use with ball bearings, meeting ISO standards 6021 and 6409. These hooks are engineered for high performance, providing reliable support in various pulling applications. Constructed from durable materials, they ensure longevity and consistent performance under load. The ergonomic design allows for easy handling, making them suitable for both professional and DIY use. This set is perfect for those who require precision and efficiency in their pulling tasks, offering a versatile solution for a range of mechanical needs.