S-1327 & L-1327 Crosby® Grade 100 Eye Hoist Hooks are 25% stronger than Grade 80 and are suitable for use with Grade 100 and Grade 80 chain. Individually Proof Tested to 2-1/2 times the Working Load Limit with certification. Each hook has a Product Identification Code (PIC) for material traceability, along with the size and Crosby name. The L-1327 hook comes with a heavy duty S-4320 integrated stamped latch which interlocks with the low profile hook tip. Latch meets the world standard for lifting. Spring is high cycle, long life. S-1327 & L-1327 Eye Hoist Hooks incorporate two Quic-Check features; Deformation Indicators and Angle Indicators. Engineered Flat for use with S-1325A coupler link. Fatigue rated at 1-1/2 times the Working Load Limit at 20,000 cycles. All sizes are drop forged, Alloy Steel - Quenched and Tempered.