SK X-frame ratchet wrenches have the smallest pivoting range between 'clicks' due to the large number of ratchet teeth. This allows you to work in the tightest of spaces. Plus, they're made in the USA! I slowly added each size to my tool box. Once you feel this tool in your hand and use it for the first time, you will be glad you bought it. I had no problem loosening the extremely stuck power steering pump and air conditioning compressor bolts with the X-frame!