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I purchased the hammer drill along with this masonry hole saw kit to bore holes for an interior french drain in my basement. It took HOURSSSS to get through the basement wall so instead of drilling 4 holes I was only able to so 2. The teeth on the hole saw are gone and it has seized on the attachment. I wish I could get my money back or exchange for another set. Now I need to purchased another attachment and I'm assuming it needs to be from.Vevor because when I went to the store to try and get a Spyder bit instead, I was told it wouldn't fit on the Vevor hammer drill so I don't know what to do now.

bonne qualité, a très bien fait le job. par contre la scie cloche se coince dans le SDS aprés et impossible de la devisser, du coup je suis bloqué

livré sans boulon de 6mm pour retenir le foret centreur qui d'ailleurs se perd a chaque trou (les vibrations mangent le filet du boulon) et la cloche reste bloquée sur la rallonge cela dit cela permet de faire des gros perçage dans les murs

Parfait pour l'utilisation demander je recommande fortement, S'adapte très facilement aux appareils requis.

The concrete hole saw kit would be a amazing buy, however the shaft gets stuck to the hole saws and have to use pipe wrenches to remove and even then still have a hole saw stuck in shaft . But I will say I love most of your products

It's good for concrete no more the 3 inches. Had to use it to drill through my foundation wall. Took forever to get 10 inches and the bit was cooked after that

Des la première utilisation l'adaptateur sds plus c'est tordu, acier de mauvaise qualité. La scie cloche tourne complètement de travers du fait que la rallonge c'est tordu. Vraiment dommage

Looked like a solid set of bits used the 2.5 inch bit to drill through 8 inches of concrete no rebar. The bit was done by the end of one single hole. Only 2 of the 8 carbide teeth left others broke off. Might work fine for cinder block or for one time use but would not purchase again. Also bolt that is suppose to hold pilot bit in place kept coming loose very frustrating.

J'ai acheté les 6 cloches pour le béton j'ai fait un trou et la vis pour mettre la mèche s'est enlevé donc impossible de remettre la mèche le filetage à l'intérieur il a été mal fait en plus il y a 2 dents qui sont cassés

Found it really hard to to take core of the drive shaft after use through one 4inch block wall when I got it apart the threads were damaged. It was like my drill was to powerful for it. I would have taught it would be well up to the task. Don't use it anymore because it is way too much hassle. Drilling the hole itself went fine just the trouble afterwards and the damage to the threads.