Internal Micrometer Set 50mm-600mmInternal Micrometer Set 50mm to 600mm Range Designed for serious measurement tasks in machining and fabrication environments. Covers internal diameters from 50mm to 600mm with precision and repeatability. Specs & Features: Measurement resolution: 0. 01mm Micrometer head with satin chrome finish for reduced glare Six extension rods: 13mm, 25mm, 50mm, 100mm, 150mm, and 200mm 50mm calibration gauge included Delivered in fitted case with adjustment tools

●One AAA battery （Not included in the package）

Long safety nozzle for precision and protection

Perfect for toolrooms

inside diameter step and depth

0 USB ports

It comes with 2 × 4

Overall length: 50mm

Retention: 1 grub screw for securing boring bars

Hose Size: 3/8 in (10mm)

Max Load 500Kg

¼″ collet size (6mm)

Shank: 10mm straight