Includes extension holder and fitted case Chrome plated handle Insulated grip. Self-centering Easily adjustable Range: 50-160 mm X 0.01 mm, Stem Length: 150 mm Broad Measurement Range: Designed for 50-160mm diameters with a precise 0.01mm resolution, ideal for diverse machining tasks. Robust Construction: Equipped with a 150mm chrome-plated handle for durability and extended service life. Ergonomic Handling: Features an insulated grip for comfortable, stable measurements during prolonged use. Self-Centering Mechanism: Ensures quick, accurate alignment within bores, improving operational efficiency. Complete Measuring Solution: Comes with extension holders and a fitted case for adaptability and secure storage. "