12-piece brazed diamond hole punch set, compatible with electric drills, used for drilling holes in tiles, granite slabs, marble, and glass, suitable for dry drilling. Multiple hole diameters are available with a storage toolbox. For hard and brittle materials, it is recommended to feed at a low speed and steadily. It is suitable for home decoration stone hole drilling construction. It is a practical tool for drilling holes in hard and brittle materials.

This 12-piece diamond brazed hole-drilling bit set is designed for use with a hand drill and is specifically tailored for drilling holes in hard and brittle materials such as tiles, full tiles, marble, granite slabs, glass, etc. It can be used in home decoration construction, bathroom installation, and stone processing scenarios. The set covers various common hole-drawing diameters, reducing the hassle of frequently changing drill bits.

The surface of the drill bit is made using brazed diamond sand technology, where the diamond sand particles are firmly bonded to the base of the drill bit. The cutting layer is evenly distributed, enabling dry drilling for harder stone and tile materials. In some situations, no continuous water cooling is required. The set includes various hole-drawing diameters, ranging from small-diameter holes to large-sized openings, to meet different construction needs for installing drainage holes, shelf holes, and bathroom hanging holes, etc.

The base metal has stable strength, and the round handle is compatible with most hand drill chuck heads, making the clamping simple and convenient. The entire set is stored in a hard tool box, with each drill bit having an independent positioning slot. The drill bits are less likely to collide and get damaged from each other, making storage neat. It is convenient to carry when going out for on-site construction and also easy to count the accessories during storage.

For materials with high hardness and prone to chipping, such as granite slabs and full ceramic tiles, it is recommended to operate at a low speed, maintaining smooth feed, and not forcefully pressing down to advance the drill bit. This can reduce the probability of material cracking and chipping. During the dry drilling process, the drill bit will generate heat, requiring short-term stops for cooling to avoid rapid wear of the drill bit due to continuous operation. For glass material hole-drawing, it is recommended to use an auxiliary cooling device to further improve the hole-drawing effect.

This set of drill bits is suitable for decoration technicians, DIY enthusiasts, and those engaged in kitchen and bathroom installation, stone processing, and home renovation hole-drawing. It is not suitable for drilling through steel or other metal materials. When using, wear safety goggles for protection, and do not direct the debris towards your body. After completion, clean the dust on the drill bit surface, put it back in the toolbox for proper storage, avoid dropping or colliding it, and prevent the diamond sand cutting layer from falling off. Proper operation can extend the service life of the drill bit, making it a practical tool for hole-drawing of hard and brittle materials.