ITEM NAME:200s Scuba Diving O-Ring Kit 18 Size Hose Seal Dive Gear Rings Replacements Description: 200 Pieces 18 Popular sizes O-Ring Sealing Gasket Washer,Meet almost all your needs. Material:Nitrile rubber(NBR),Heat and abrasion resistant Great for your tank valve, hp and lp air hoses Works well for cameras, pressure gauges, dive lights, Easy to use: Stored in a labeled and organized case,easily choose sizes you need; Sturdy storage case is better for organization and portability. Box Size: 20x13.5CM/7.87x5.31 inch Package Includes: 1 Box Scuba Diving O-Rings Kit SKU: DMO0019079354050404.1 Box Scuba Diving O-Rings Kit. Material:Nitrile rubber(NBR),Heat and abrasion resistant. SKU: DMO0019079354050404.