Steam Release HandleThe steam release handle is design for Ninja Foodi OP301, OP401of 6.5qt and 8 qt only and controls Sealing and Venting, works same as original one totally . It is easy to use and install, which also grips the metal piece it attaches to without easily falling off. Food Grade Material: Our steam release valve is made of food grade PP plastic & Sus304 stainless steel. No BPA, non-toxic and tasteless, meets FDA standards. The best choice for enjoying healthy and safe cooking. SizeExternal Size: 4.78x 2.69cm/1.88'' x 1.06 (L*W); Internal Hole Diameter: 1cm/0.4'' Fast Steam ReleaseThis pressure cooker replacement parts is easy and fast to release the pressure to avoid long cooking time with old accessories, features the characteristics of high temperature resistance, safety and durability.