United States Powerlifting Association (USPA) - Grip rules for Bench: See that ring about an inch to the left the lifters' pinky? That's the 81cm mark, and is the max allowable grip
International Powerlifting Federation (IPF) Introduces New Bench Press Rules For 2023 – Fitness Volt
IPF Shares New Bench Press Rules for 2023 (with Examples) - Lift Vault
New IPF bench rules w/images : r/powerlifting
Bench Press Will Never Be the Same – Torokhtiy Weightlifting