Rennie Tool Company 152mm x 150mm Long Diamond Core Drill Bit Set Includes SDS Adapter, Hex Shank Adapter & Centre Bit. To Be Used In Concrete Masonry Brick Block Stone Granite Accessories

Good quality! Definitely worth the money! Easily cut through double skin 100mm breeze blocks and left a really clean hole. I bought the 102mmx150mm drill bit to install an extractor in a new shower room. I must admit I was anxious about the wisdom of buying this core drill bit after reading the recent reviews. But, based on my experience, this core drill bit is perfectly suitable for what I needed to do. I took my time - overall it took about an hour but with only 20 mins total drilling time as I took frequent breaks. I set my standard, basic domestic drill to almost the slowest speed. Every 30 seconds or so I withdrew the bit to clear any dust. I took a short break every 5 minutes to ensure I wasn’t getting tired and could keep the drill straight - and also to ensure the pilot bit was secure (it got a bit loose a couple of times - but you can feel this so stop and reattach it) No damage or even any significant wear to the teeth. It’s impossible to tell whether the cutters have any diamond content - but I know this was good enough for normal density breeze blocks and will be serviceable for many more similar jobs. Make sure you’ve fully tightened the adaptor. I used the 10mm adaptor which, with care, worked well enough in my regular drill chuck. Based on my experience today, I’m happy to recommend it to anyone who’s wavering on purchasing this. It’s certainly cheaper than hiring a drill bit and high end drill. Good luck!

Amateur DYI use, to install vents in concrete shed, due to poor ventilation and mould risk Just got around to using this product with my new Makita cordless SDS+ drill. It cut through a solid concrete brick wall in about 15-minutes. The key is to let the drill and bit do the work and do not apply too much pressure...and always turn off the hammer function and set it to drill mode, as others have likely said. Perfect clean cut, drill guide hole from the inside of the structure to the exterior, then use that to guide you back from the outside, as it is a very very dusty job. Face mask, eye protection and eye defenders are a must. No damage to plaster work if you take your time. Little wear on the drill bit itself and I expect I will get years out of it. Would recommend.

This worked ok, but it was a lot of effort and took a good 45min for each hole (about 10cm). This was my first attempt using such a tool, but it left a smooth shaft and cut cleanly. Straightforward to attach it to my drill.

Excellent item and brilliant value for money

I'm pretty sure that this is not really a diamond drill... I'm not convinced this 162mm drill had any diamond cutting edges at all. It certainly felt like the teeth we totally blunt. It eventually managed to drill the two holes that I needed it for but it created a lot of vibration and, because of this, the holes are larger than intended (about 10mm larger due to the vibration). This dill bit compares very badly with other manufacturers 150mm and smaller bits that I've previously used, with the same drill, which cut very smoothly and cleanly, however it was the only 162mm bit that I could find. I'm glad I'll never need to use it again...

I was sceptical this would do the Job but very Happy with it's performance. Needed to Bore a Hole through an old Council House Bedroom wall circa 1940's so very hard propa Brick for a Portable Air Con Unit outlet Pipe. It took about 70 Mins with short breaks for me and the Core Drill Bit so neither of us over heated, Did the job very nicely, I was fairly impressed to be honest. The Drill I started off with was my Makita DHR243Z SDS but it started to thermal cut out about 20 mins into the task so I swapped out to my Makita DHP486 which was far better at coping with the Core Bit. I didn't use any Water as instructed for this Core Bit, But wow the amount of Dust produced would have me setting my stall out to capture as much as possible, Warning even with a Henry Hoover close to the Bit dust goes everywhere.

Great drill but unfortunately I ordered the incorrect size

It did the job, but only just. I only needed it to do one hole. So can’t complain. Would I buy again, probably not.

Je n’ai pas trouver l’adaptateur dans le colis