TIVOLY - Damaged Screw Extractor Set - 5 HCS Extractors: N1-N2-N3-N4-N5 + 1 X-Out N2 - For Extraction of M4 to M18 Screws and Studs

Easy to use good quality and brilliant price.

A good tool to have as a contingency - seem well made and are reasonably priced.

I purchased the Tivoly 11111070001 Damaged Stud/Screw Extractors with high hopes for tackling stubborn screws. Unfortunately, my experience was less than satisfactory. Upon the first use, one of the extractors broke, revealing disappointing durability. While the remaining extractors managed to do the job adequately, the premature failure of one unit was disappointing and raised concerns about the set's overall quality. If durability is a priority for your projects, I would recommend exploring alternative options.

Managed to round off and snap two of the bolts holding in my front seat of my car.Drilled them out and managed to get them both out with these. Put far more pressure through these than I thought they would take but they didn't snap and got both out.The size I used shows no signs of wear either so surprisingly impressed and well worth it.

I sheared a bolt which holds the strut brace to the top mount in my car and after a lot of research these particular style of extractors seemed to be the most successful. I centre punched the remaining piece of bolt, drilled a 3mm diameter hole about 4/5mm deep, put in the no.2 (3.5mm) extractor (you need to drill a slightly smaller hole than the extractor) taped it a few times with a hammer, got a good grip of the square end of the extractor with a mole grip, turned anti-clockwise, it took a fair bit force to get the initial bit of rotation as I think the threads had corroded slightly, even still the extractor had such a good grip it got the broken bit out no problem. Could not have gone any more smoothly, very impressed. My only criticism is the instructions are pretty much non-existent.

I wanted to leave a positive review because these did actually manage the job I originally purchased them for, but I had to do extra drilling as only the largest piece wouldn’t snap for the fairly easy task of removing a seized retaining screw from a brake disc and hub.Well not long after I needed these for a bolt in the exhaust and the largest one snapped, I was only turning it with my hand using an adjustable wrench and wasn’t even giving it that much force and it snapped, they are really not strongThey do work but only for easy stuff, if you have a seized metal bolt then there’s a good chance they’ll just snap, I did grind the snapped end down in hope I could still use them and they grind very easily so not a very strong materialThey really aren’t worth the price, they are a really cheap quality

Was able to apply a reasonable force to the 3rd largest bit without it breaking.

Bought these to replace a snapped screw on a support hoist....the screw was held in with thread lock. After carefully drilling a centred pilot and expanding its diameter I inserted one of these and carefully extracted the remains of the screw. These extractors are strong and give you an excellent grip, giving you confidence that it will not snap.

Bon produit, j’ai pu extraire une vis cassée. Il faut respecter le diamètre à percer avant d utiliser l’extracteur.

alles ok. habe die Schraube lösen können

Este SI que funciona!!, compre anteriormente un kit chino mas barato que son conicos-cilindros, y esos no sirven para nada... Pero estos si que funcionan.Enseguida saque el tornillo de acero roto de su lugar, y no tube que hacer un agujero muy profundo, (unos 7 u 8 mm.) introduje el exractor, le di una vuelta a mano (bueno con una especie de destornillador que es para llaves de vaso) hasta que agarro, y al seguir dandole despacio con una llave de carraca, cuando quise darme cuenta ya estava saliendo con el tornillo roto..100% recomendable y efectivo. Muy buena herramienta. Estoy muy satisfecho.

Acquistato per rimuovere un certo numero di bulloncini testa tonda phillips molto ostici (la croce phillips era andata, e i bulloncini erano fermati con un dado autobloccante che era all'interno della struttura tenuta dal bulloncino) hanno funzionato senza particolari problemi. Ovviamente, con le accortezze del caso: li ho utilizzati con un avvitatore a impulsi, a basso numero di giri, e avendo prima fatto un foro di diametro opportuno sul bulloncino.

Ils fonctionnent bien, mais ils sont un peu abîmés pour une utilisation.