eBOOST™ increases the lubricity and anti-wear properties of A/Coil and rejuvenates rubber seals and O-rings; Spotgun cartridge-type ESTER oils utilize the Spotgun injectionsystem to inject a precise measured amount of A/C Oil; Spotgun Cartridge Hybrid ESTER Oil; Viscosity: 100; Unit size:4 oz/120 ml; Quantity: 1