Specification: Dimension: 13mm+16mmMaterial:PlasticColor:BlackFeature: 1.Suitable for car air-conditioning replacement and maintenance.2.5 caps high side port 16 mm ,and 5 caps low side port 13mm.3.Pressure resistance, corrosion resistance.4.Seals are included in the caps.5.Universal fit for most of vehicles.Package included: 10 Pcs/Set Charging Port AC System CapsNote: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.4.Instruction is not included.Professional Installation Is Highly Recommended! Dear buyers, we appreciate your business, if you are satisfied with our service, please leave us a positive feedback and rate the details of the transaction (Detailed Seller Ratings) with a ;PERFECT 5 STARS;. If you have any problems, broken, quality problems, please don't worry, and don't leave bad feedback. Please send us an email first, we will reply you as soon as possible, please allow us to respond within 12 hours. We understand your mood, and will provide you with the best solution for your problem, please give us the opportunity to solve the problem, For any case,please feel free to come to us,we are always here. look forward to and thank you for your trust