BoxoUSA Elite Master Tool Sets range from 219 to 463 pieces in metric, SAE and aviation configurations. Options include an SAE 12-point set (219 pieces), SAE 6-point set (225 pieces), Metric 6-point set (288 pieces), Aviation set (310 pieces) and Metric and SAE set (463 pieces). Compared with the Advanced sets, they add tools such as ratcheting and flex head wrenches, nut drivers and T-handle hex keys.