PRECO takes the leading position in the industry in terms of the production and quality of annular cutter bits. PRECO's gage blocks series include multiple types. It has the required colorfastness. It is able to withstand normal laundering/dry cleaning cycle without color loss. Made of super-tough steel, it guarantees high efficiency. The product does not produce any toxic or odorous gases and substances that cause pollution to our environment. With high-temperature resistance, it remains a stable performance even the inner machine temperature is high.
With a strong sense of responsibility, PRECO only provides the best step drills for customers. Ask!