Adjustable Parallel Pair Included Sizes 1 5/16 in to 1 3/4 in 33 mm to 44 mm Maximum Size - Inch 1 3/4 in Maximum Size - mm 44 mm Minimum Size - Inch 1 5/16 in Minimum Size - mm 33 mm Number of Pairs 1 Range - Inch 1 5/16 in to 1 3/4 in Range (mm) 33 to 44 mm Thickness 9/32 in Includes - Includes Case No Length 4 3/16 in Parallelism +/-0.001 in Tolerance -