Compression Block Off Kit, Tool Type A/C Block Off Kit, Application Automotive A/C, For Use With A/C Lines and Adapters, Material Aluminum, Outside Diameter 3/8 in, 1/2 in, 5/8 in, 3/4 in, Size 1/2 in, 3/4 in, 3/8 in, 5/8 in, Includes 1/2 in A/C Compression Block Off, 3/4 in A/C Compression Block Off, 3/8 in A/C Compression Block Off, 5/8 in A/C Compression Block Off, Number of Pieces 4