Review on TEKTON 47925 3/8 Inch Drive Deep 6-Point Impact Socket Set - 13-Piece (7-19 mm) - Review, Price & More by William Hunter

This is the metric set you need. There are no sizes missing. This is a deep socket drum kit but at this price you can afford it for all your needs. Every time I've rated a set like this in the past, it's surpassed 100. This makes this a great purchase, even if one of them breaks I can't complain. I used 18mm to build my weight rack. (Squat Rack) It worked great and hooked up to an electric drill making it all happen in less than 20 minutes. Yes, you should expect all of this from a set of heads, but the price point sets this head and shoulders apart from the competition.