Multi-purpose drilling bit :This drilling bit can be used for drilling through vitrified brick, ceramic, stone, and marble, making it a versatile tool for various DIY projects. 12pc brazing hole opener :This product comes with 12 different sizes of brazing hole openers, making it versatile and suitable for various drilling tasks. Reaming bit set :This product includes a reaming bit set, which is useful for enlarging existing holes and ensuring in drilling. Wood drilling :This drilling bit is specifically designed for wood drilling, making it an efficient and effective tool for woodworking projects., Manufacturer: Akfldms