Good Sealing Performance: The conical cap plug is specially designed for automobile leakage test to ensure that the opening is tightly sealed, and no dirt can enter while the sealing performance is good Sturdy and Durable: Automotive cap plugs kit made of durable plastic material, it is lightweight, corrosion-resistant and wear-resistant. Strong Sealing: Automotive block cap plugs wide and thick flange edge provides better sealing effect, and the conical design ensures that the plug can fit tightly on the pipe and interface, effectively preventing leakage and dust intrusion, thereby protecting internal parts from contamination Package Includes: 42 x Automotive cap plugs kit It can maintain good performance and extend service life even in harsh working environments MR CARTOOL 12V Auto Injector Tester User Manual MR CARTOOL BT760 download instruction manual pdf Aazon.co: 48 Pcs Autootive Cap Plugs Kit 0.11" To 2.39" Fit For