High quality alloy measuring heads can be used for various internal size measurement, fine workmanship and no burr Clear laser marking line for convenient reading The main micrometer body is made of stainless steel with chrome plated surface, wear-resisting and durable Designed with locking device, precise machinery structure make it more intuitive and convenient to read Built-in ratchet stop device ensures accurate repetitive readings, Weight: 0.527015037311 Pounds, Manufacturer: Sxhlseller