Bosch Hex-9 Hardcer 8x90 mm Marble Sverlos - is a high quality sverlo designed to be accurate and cracked from harsh ceramics, marble, porcelain and tile surfaces. This product, which has a hard carbide tip and innovative spiral design, allows more efficient drilling with minimal friction and guarantees long-lasting use. Ideal for opening small and medium-sized holes with 8 mm diameter and 90 mm long. Thanks to the hex clip, the Sverlo Mandr is not sliding and stability is provided during drilling. Designed for use with drel and other appropriate electric instruments, this Sverlo is invaluable for those who want to get a professional result in bathroom, kitchen and other tile / ceramic applications.