BumpStop® Advanced Cylinder Technology protects against surreptitious bump attacks 2-1/2in (64mm) wide chrome plated solid steel body resists cutting, sawing and corrosion 1-1/16in (27mm) tall, 7/16in (11mm) diameter hardened boron alloy steel shackle for superior cut resistance Rekeyable 6-pin APTC14 cylinder helps prevent picking,Keyed Different, Commercial Boxed Packaging,Shelf Pack Qty: 6,Master Carton Qty: 24,Body Width: 2-1/2in (64mm),American Lock Technical Service Manual