Telescoping Gauge Set, Range 1/2 in to 6 in, Gauge Plunger Style Single-Arm Plunger, Included Gauge Ranges 1 1/4 in to 2 1/8 in / 32 mm to 54 mm, 1/2 in to 3/4 in / 13 mm to 19 mm, 2 1/8 in to 3 1/2 in / 54 mm to 89 mm, 3 1/2 in to 6 in / 89 mm to 150 mm, 3/4 in to 1 1/4 in / 19 mm to 32 mm, Maximum Measurement - Inch 2 1/8 in, Maximum Measurement - mm 54 mm, Maximum Measuring Depth 2.625 in, Minimum Measurement - Inch 1/2 in, Minimum Measurement - mm 13 mm, Number of Pieces 5