Earls AT165156ERL Ano-Tuff Special Purpose Adapter Exclusive Hard-Anodized Coating; Bagged Packaging; Tubing; Size 5/16 inch; -06AN Female Coating Penetrates Aluminum For Wear Resistance Coating Penetrates Aluminum For Corrosion Resistance Provides An Aggressive Look For Your Engine Last Twice As Long As Traditional Anodized Fitting