Utiles para trabajar y buena calidadWish there was a 9mm and 18mmniceThese are nice like 2 nice to be in my tool box. Feels like a solid wrench. Nice tray, pretty tool 100% worth the price!These wrenches are a life saver when I was trying to take off the factory downpipe on my Audi. It made a 2 day job to remove a nut, take 10 mins with these half moons.Okay, ive been an aircraft mechanic for 40+ years. Now I teach the young up and coming mechanics. I needed a half moon wrench for an Aircraft Turbine Engine Starter because the nut was not accessible with any other tool. I just want to say these wrenches are actually nice!!!! I own nothing but Snap-on and MAC tools and honestly didn't want to spend a ton of money for a set of snap-on or MAC wrenches for just 1 nut and teaching my class.These wrenches are of good quality and look nice as well. For $25 bucks I feel it's a steal. You definitely won't go wrong if you purchase these. Another note, they are garennteed if they break.Great toolI bought these wrenches, mainly for the price, because I'm sick and tired of paying a hundred plus dollars per wrench off the tool trucks when I could buy four sets of these for the same price. I do a ton of transmission and Driveline work for a living and always fought with the upper transfer case bolts on four-wheel drive trucks and jeeps. No more! A 1972 Jeep Wrangler with 9/16 transfer case bolts and this tool took them out with ease. So far I've only used a couple of the wrenches but they have all fit perfectly on the Fasteners I use them on. I'm getting to the point in my life where I am not going to spend a lot more money on tools but if I need to, I will definitely look at duratech to see if they have what I need.