The range of measurement is wide: the range of telescopic pressure meter is 5/16 inches to 6 inches (8 mm to 150 mm), so that you can easily measure various pores. From small to large, this suit can help you . High - drilling measurement tool: This 6 -piece telescopic measuring instrument is designed for precise drilling measurement. It is made of High-quality materials, which has high and durability and can be used for a long time. Thin design characteristics: Our holes are equipped with a rolling flower lock knob and a fixed area to provide safe grasping and easy adjustment. measurement: This set of professional -grade telescopic pores can measure high accuracy from 1/8 inches to 1/2 inch holes, and grooves. Widely used: suitable for measuring small holes, , and grooves of various industries, which are made of high -quality stainless steel., Weight: 0.74075320032 Pounds, Manufacturer: Tuidzljd