Monolock - GIVI offer a very cost efficient solution in their Monolock series, these cases lighter in construction yet not compromising their efficency and durability, the Monolock series cases offers the complete top trunk solution. Each Monolock case comes complete with a universal mounting plate and hardware enabling this series of cases to be mounted to many stock or aftermarket flat or tubular luggage racks. Weight of case: E30 = 6. 25lbs, the E450 = 8. 47lbs Weight of case: B37 = 9. 7lbs, the B47 = 9. 95lbs Color: E30/E450/B37/B47 Matte Black w/Red Lens Color B37/B47 Tech Matte Black w/Smoke Lens Material: Polypropylene Max Load: E30/E450/B37/B47 = 6. 6lbs Helmet Capacity: E30/B37 = 1 Helmet, the E450/B47 = 2 Helmets Universal Mounting plate Included.