[Refrigerator Filter Dryer]: The refrigerator filter dryer is made of copper and contains molecular sieve particles. The molecular sieve particle size is 1.6-2.5 mm, the bulk density is ≥0.85 g/ml, and the static water absorption rate is ≥20%. 5.1" long, 0.7" diameter, 1/4" in, 1/10" out. [HVAC Service Access Valve ] Air conditioner access valve Thread x OD: 1/4'' SAE x 1/4'' O.D. Length: x 4.7" stem, Tube Thickness: 0.24".The caps are made of copper, they are provided with core remover and have an inside rubber O-ring. [3-Piece Refrigerator Repair Tool Set]: Special packaging box, containing 1 5.1-inch refrigerator filter dryer. ID: 0.25"/6mm; 1 check valve, 15" phosphor bronze electrode. [Copper Solder] BCuP-2 Self Fluxing Phosphor Copper Brazing Alloy Welding Rods No Need for Flux 0.050" x 1/8" x 10" Industry Professional Grade Propane Soldering Torch Supply [Application scenarios] refrigeration repair kits are suitable for refrigerators, freezers, ice machines, small household air conditioners, large commercial air conditioners, and systems. If you encounter any problems during use, please contact customer service in time.