This Bore Gauge Is Made Ofstainless Steel, And Is Thin And Lightweight. It Measures In Milimeters On One Side, And Inches On The Other. The Length Of The Entire Qauge Is 7", And It Has A Handle Hole For Hanging. It Also Includes A Vinyl Storage Pouch.* Stainless Steel * Measures 7" Long * Measures In Mm Or Inches * Hole For Hanging * Includes Vinyl Pouch