1. MULTIFUNCTIONAL - Professional automotive air conditioner 134A compressor A/C injector kit for injecting oil and dye through low pressure suction side into the air conditioner compressor. Includes extra 2 pieces low side oil checker
2. WIDELY COMPATIBILITY - Comes with extra couplers for connecting with automotive 134a low side suction port, hose fitting feature 1/4 inch female and include extra 1/4 inch to 5/16 inch adapter great for R410A HVAC system. Capacity: 1/4 oz/7.5ml---2oz/60ml
3. EASY OPERATION - To inject dye or oil, simply connect the injector to the low side of the A/C system and twist the handle until you reach the desired amount. Novice can do it independently
4. LONG LASTING - Hand turn body was built by light but compact aluminum alloy, thickening hose with heavy-duty brass couplers for safe and smoothly connection
5. WORRY FREE SERVICE - 100% Satisfaction Guarantee, 1 year return, refund or free exchange if you aren't completely satisfied. ODIB001