Irwin Tools 5026015 Spiral Masonry Review

This industrial drill bit is a powerhouse when it comes to drilling into tough masonry materials. The spiral design allows for smoother drilling and faster results. It's truly a must-have for any industrial and scientific drilling project. The only downside is that it may not be suitable for softer materials but that`s to be expected with such a high-quality and specialized tool. Overall, it's an excellent investment for any professional looking to improve their work efficiency and results in…

Fits well in cartridge and gnaws through concrete; However, the bit regularly slips when in contact with hard concrete, causing the chuck to shear off part of it. My 3/8" shank eventually approached the 1/4" shank, even with religious tugging. I'm sure the bit would last a long time if I used it on lighter surfaces like brick or cinder block or if I didn't have to drill that deep. Not bad overall, but a standard drill press is probably not the best tool for heavy-duty masonry drilling.