Standard Pack = 1 piece(s). Type = Precision Adjustable Parallels ; Number Of Pairs = 6 ; Measuring Range = 3/8 To 2 1/4 Inch ; Length = 1 5/8 To 4 7/8 Inch ; Width = 5/16 Inch ; Parallelism = +/-0.001 Inch ; Includes = Plastic Pouch ;