The R134A quick coupler adapter is made of high-quality brass material and is long-lasting. Its 6-ball quick coupling provides a solid guarantee for the safe and efficient operation of the refrigeration system. Specification: Brand: BDZMC Name: R134a Quick Coupler Adapter Color: Red/Blue Material: ?Brass Size: Blue Adapter: 1.88 × 0.86 inches Red Adapter: 1.88 × 0.98 inches Applicable: Most Vehicle Features: -The R134A quick coupler adapter is designed with an ergonomic knurled grip ring, which is not easy to slip during use. -The R134A quick coupler adapter is made of high-quality brass material, which can maintain stable performance during long-term use. -The R134A quick coupler adapter has a 6-ball design that fits snugly into the R134A ports to prevent leakage.