Silverline - 282458 - Masonry Drill Bit SDS-Plus - 25 x 1000 mm (Tools & Accessories)
sds bit more 25x1000 jet also silverline 25x600 home that I use before drilling with 1000, it is all the two high quality. since I lai, I had to drill hundreds of holes and that even in extremely solid concrete wall, I use the spared no one can say w