These telescopic gauges are designed to be used with an outside micrometer for accurately measuring the inside diameter of bores. They are extra long, making them suitable for measuring both deep and shallow holes, slots, and similar workpieces. Constructed from stainless steel, they are resistant to deformation and breakage, ensuring long-term durability. Features - Color: Silver - Material: Stainless steel - Dimensions: 15.20 x 13.30 x 1.00 cm / 5.97 x 5.23 x 0.39 in - Dimensions: 13.80 x 9.20 x 1.00 cm / 5.42 x 3.62 x 0.39 in - Dimensions: 13.80 x 4.90 x 1.00 cm / 5.42 x 1.93 x 0.39 in - Dimensions: 11.40 x 3.00 x 0.70 cm / 4.48 x 1.18 x 0.28 in - Dimensions: 11.40 x 1.90 x 0.70 cm / 4.48 x 0.75 x 0.28 in - Dimensions: 11.60 x 1.30 x 0.60 cm / 4.56 x 0.51 x 0.24 in - Made of stainless steel, this telescopic gauge set is durable, resistant to deformation, and built for long-term use - To measure, expand the gauge inside the hole, lock it in place, remove it, and then measure with a micrometer or caliper to determine the internal dimension - High-precision measuring tools ideal for use in industrial, mechanical, and manufacturing applications - Durable and user-friendly, these telescoping gauges are suitable for both DIY enthusiasts and professional users - Compact and portable design with multiple sizes included to meet a variety of measurement needs Package List 1 x Telescoping Gauge (5/16" to 1/2") 1 x Telescoping Gauge (1/2" to 3/4") 1 x Telescoping Gauge (3/4" to 1-1/4") 1 x Telescoping Gauge (1-1/4" to 2-1/8") 1 x Telescoping Gauge (2-1/8" to 3-1/2") 1 x Telescoping Gauge (3-1/2" to 6")