T&O is a house name for Chinese import tooling. I do not have experience with that brand, but I do with some of the same or similar tooling under different names from other sellers. Whether the quality is any different among the various brand names is subject to speculation, I think most of it is about the same, and the biggest issues are with lack of quality control by the manufacturers, which lowers prices but also quality consistency. I tend to compare prices and then make the choice by the seller's reputation at accepting returns or replacements of substandard parts at the seller's expense.