Features 【Quality Material】Made of environmental friendly rubber with excellent oil and UV resistance. Super pliable construction and extra thick wall design stands for long term service and durability. 【Assorted Well】225 pis O-Ring of 18 most popular metric sizes come with a storage case that keeps each size separated and organized. 【Environmental Friendly】Wear-resistant and corrosion resistant, no pollution, no radiation, no abnormal smell, environmental friendly. 【Handy Box】Come with a dimension comparison list for distinguishing different sizes easily. This assortment comes in a sturdy molded storage case for organization and portability. 【Wide Application】Ideal for automobile repair,electrical appliance and other fields. This assortment is perfect for all type of hydraulic automotive car and truck repair work. Description: Brand new and high quality. Color :black Size Type: 18 Material: rubber Box Size:20.5*10.1*3cm(L*W*H) Package included: 225pcs x rubber gasket (packed with plastic box) Note: Please allow 1-2cm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same Package List