The Rubi Drygres Premium Diamond Drill Bit Set includes four high-quality bits in sizes 6 mm, 8 mm, 10 mm, and 12 mm, all featuring an M14 thread for compatibility with angle grinders. Designed for dry drilling applications, this set is optimized for hard tiles and delivers efficient performance without the need for water cooling. Each diamond-tipped bit allows for precise, clean holes with minimal breakout, thereby enhancing durability and lifespan during demanding tiling tasks. The robust construction ensures reliable operation, making the set suitable for both professional and DIY use in construction and renovation projects. With a focus on accuracy and user-friendliness, this set supports consistent results across various ceramic materials, backed by Rubi's reputation for quality tools in the power tool category.