Crosby® Grade 100 eye sling hooks. Forged alloy steel, quenched and tempered. Each hook has a Product Identification Code (PIC) for material traceability, along with the size and the name Crosby and U.S.A. in raised letters. 25% stronger than Grade 80. Eye sling hooks incorporate two types of strategically placed markings forged into the product which address two (2) QUIC-CHECK® features: Deformation Indicators and Angle Indicators. Low profile hook tip. Utilizes S-4320 integrated latch which meets the world standard for lifting. Heavy duty stamped latch interlocks with the hook tip. High cycle, long life spring. When secured with the proper cotter pin through the hole in the tip of hook, meets the intent of OSHA Rule 1926.1431 (g) and 1926.1501 (g) for personnel lifting.