Goldblatt2 Piece Drywall Corner Tool Set, 5'' Outside Corner Knife & 3-1/2'' Inside Corner Knife, with Soft Grip Handle - Stainless Steel Sheetrock External Corner Trowel & Internal Corner Trowel

Good Quality

Pros:- The construction of the trowel appears stable.- The three welding points on each side with an additional holder are also very well done.Cons:- Unfortunately, the trowels are completely unusable.- The outside corner trowel is supposed to have an angle of 90°. I measured it, and it only has an angle of 80 degrees - 10 mm insde bend on the 60 mm length.- Since it also has no rounded corners and all four corners are pointed, I can't create a corner with it. It completely destroys my plaster.- The inside corner trowel has an angle of 102 degrees, a deviation of 20 mm over a length of 100 mm. Here, I can still achieve something by holding it at an angle. However, the pointed corners are also counterproductive.

For someone like me who is an armature, these save me a lot of time and do a better job than I would do with a taping knife. Love the stainless steel when cleanup time comes.

Good build quality. Wish the outside corner was a little wider. Provides smooth, straight corners inside and out.

I had to buy these tools after a professional (that charged way too much) messed up all the corner mudding during a renovation in my house. It was impossible to paint the work that he did so I purchased these tools after searching for how to videos online. I found one from This Old House that was so helpful and straightforward so I ordered this tool and go to work. Not to brag but the difference between my amateur work versus the work of the professional was night and day. I honestly didn’t know I would be able to do that much better of a job. I’m so pleased with the results and have to recommend this tool and the video I watched and give them the credit. It’s absolutely worth the money to get this tool. It made such a difference in the quality of work, and I was able to paint a precise and crisp line differentiating between the two walls with different colors. The mudding in the corner is now exact, thanks to this tool, so I could tape it off with precision. Do yourself a favor and just buy this tool. You’ll be glad you did.