home March 30, 2021 Officina Martello was founded in 1948 and specializes in the construction of hammers with tungsten carbide carryover, better known as Widia, to revive grinding wheels. It was the first in Italy to apply and promote tungsten carbide tools for marble and granite, such as drill bits, cylindrical shank cutters, 1/2 "GAS shank cutters, chisels, bush hammer, picks, chisels, steps, hammers, and so on. DRILL BIT Cylindrical Helical Drill Bit for Percussion Granite (Gold) Drill specially developed to drill granite only. Available from ø 2.5 mm. at ø 30 mm. Cylindrical Twist Drill Bit for Granite for Low Speed Speed (Blue) Drill specially developed to drill granite only. Available from ø 2.5 mm. at ø 30 mm. Cylindrical Twist Drill for Rotating Marble (Red) Drill specially developed to drill only marble. Available from ø 2.5 mm. at ø 30 mm. Cylindrical Twist Drill Bit for Marble and Granite percussion / rotation - Universal - Bryon Drill specially developed to drill only marble and granite. Efficient and fast. Available from ø 3.5 mm. at ø 10 mm. Made in Italy by Officina Martello di GIORGI F.LLI srl Customer Service - Contact Us For questions about an order or for information about our products. to send a message We recommend that you see: © Copyright 2006-2018 OMGF srl - VAT IT00229290184 - All rights reserved Powered by This site uses the technique of cookies. For more information, see the cookie policy. More information OK