YSTOOL master quick disconnect tool set, compatible with GM Ford Dodge Mazda and Chrysler, will help to separate quick disconnect couplings on A/C lines, fuel lines and transmission oil cooler lines. These couplers on A/C fuel system are safety mechanism, ensure not be disconnected easily while still charged and under great pressure, avoid the possibility of an explosion and frostbite damage. And quick disconnect tools are necesssry to separate the couplings faster, easier and safer This quick disconnect kit includes 7 types tools: 7PCS white plastic A/C fuel line disconnect tools, 6PCS color coded and size marked aluminium a/c fuel line disconnect tools, 4PCS color coded and size marked plastic A/C spring lock coupling disconnect tools, 1PC silver metal fuel line disconnect scissor tool, 1PC ford fuel line coupling disconnect tool, 1PC ford oil cooler line disconnect tool, 1PC ford/gm quick coupler disconnect tool, 2PCS rubber inserts and 3PCS rubber bands 22PCS quick disconnect tools are made of lightweight anodized aluminium or premium metal or superior plastic for long term use, and can work for several sizes lines: 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8". Choose the proper size one of the 4PCS A/C spring lock coupling disconnect tools, to engage the spring boss on the proper side of the fitting, a simple inward thrust of your coupling tool hand pops open the spring retainer and then a momentary tug by your free hand separates the connection Tool operation is also very simple for other disconnect tools. Clamp the tool over the A/C fuel lines proper side, while holding the line, firmly push the tool forward so its barrel is able to depress the line's internal quick disconnect coupling, the spring (locking mechanism) has been released by listening for the slight "click", then pull back the line to remove it. Remember to relieve the pressure in the system you are working on before disconnecting it Necessary for YSTOOL Master Quick Disconnect Tools 22PCS Kit
Spring lock couplings on A/C system and quick disconnect couplings on fuel system are safety mechanism, ensure these systems will not be disconnected easily while still charged and under great pressure, avoid the possibility of an explosion and frostbite damage
If you want to maintenance and repair A/C system and fuel system, you need quick disconnect tools to separate the couplings faster, easier and safer
Remember to relieve the pressure in the system you are working on before disconnecting it, and remember to pull on the line after the spring (locking mechanism) has been released by listening for the slight "click". Wear gloves and goggles

7PCS Plastic A/C Fuel Line Disconnect Tools
7 Sizes: 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8"
Fit for SAE and metric applications. Disconnects A/C line spring lock couplings on Ford, Dodge, and Chrysler. Separate fuel lines quick disconnect couplings on GM, Ford, Dodge, and Chrysler. Not intended for heater hoses
6PCS Aluminium A/C Fuel Line Disconnect Tools
Color Coded and Size Marked: 5/16"(Champagne), 3/8"(Blue), 1/2"(Gold), 5/8"(Green), 3/4"(Black), 7/8"(Red)
Material: Lightweight Anodized Aluminium
Disconnects A/C lines spring lock couplings on Ford and Chrysler. Separate quick disconnect couplings on fuel lines, fuel filters, fuel tank return lines, automatic transmission oil cooler lines
4PCS A/C Spring Lock Coupling Disconnect Tools
Color Coded and Size Marked: 3/8"(Red), 1/2"(Blue), 5/8"(Black), 3/4"(White)
Disconnects A/C lines spring lock couplings on 1981 and newer Ford and some 1994 and newer Chrysler vehicles
Fuel Line Disconnect Scissor Tool
Ford Fuel Line Coupling Disconnect Tool
Ford/GM Quick Coupler Disconnect Tool
2PCS Rubber Inserts and 3PCS Rubber Bands