Bosch 5x EXPERT SDS plus-7X Hammer Drill Bit Set (for Soft stone, Hard stone, Ø 6-10 mm, Professional Accessory Rotary Hammer Drill)

Cut through Brick and Concrete like a hot knife through butter. I was a bit hesitant to spend £18 on Drill bit set but I am glad I did as these made my job so easy. I bought a canopy for my patio doors, from Amazon and I needed a 10mm drill bit to drill 6 × holes in my masonry wall which would have been a struggle without a proper drill machine and bits.I bought Bosch SDS GBH 2 26F and the above drill bit set and I am very impressed by the sheer power and quality of these Expert SDS range bits. Within 10 mins all 6× 10mm holes were done. Also drill bit still looks like new and I believe it will last me a life time. Money well spent.

I purchased these bits in a selection of sizes in anticipation of a particular job, which was then delayed. With the 6mm bit, drilling into standard red house brick, the tip of the drill separated from the shank on the first hole (only 40-50mm depth). The fractured end rounded off. I'm not sure that if used with its intended substrate , reinforced concrete, it would have managed to penetrate at all without breaking.Reference to the other 1-star reviews for these bits will show that this is not an uncommon scenario. At best, a defective batch has made into the reseller channel. At worst, they are all like it. There are a large number of positive reviews, and indeed, I found the other sizes I'd purchased to be fine (at least, in red house brick), which suggests that it may be worth taking a risk but only if you test their fitness for purpose before the Amazon return window closes.

Those are the best hammer drill bits I ever owned, they drill through concrete with phenomenal ease and center so easily, no wandering whatsoever and remain sharp after prolonged usage and provide with a clean precise result!

Worth the price. So far indestructible.

With double blade cutting crown it’s just fun using them. Working fine either with small cordless drill with hammering or a proper hammer drill.