This is a simplified version of Mamorex. A great deal with a 2-pack x 2 set! It's the same as the original, just without the hook. It's cheaper because it doesn't have the hook. We generally recommend the standard Mamorex for increased security, but if you think, "I don't want anything too bulky. I already have a good crescent lock. But I guess I should have ONE window TWO locks..." then this Benry Lockman is for you. [Specifications] Body: Iron painted finish and rubber Applicable dimensions: 30mm to 43mm A product of Shimizu Corporation.