I have one each of these. Fits 80% of the nuts and bolts on my XF. Will also do some square heads. Actually very handy.....
Gator Grip ETC-200MO Universal Socket: fits standard 1/4-inch to 3/4-inch and metric 7mm to 19mm nuts and bolt heads; 3/8 drive
Amazon.com: Gator Grip ETC-200MO Universal Socket: Home Improvement
Gator Grip ETC-125MO King Gator Socket: Fits hex heads measuring 7/16-inch (12mm) to 1.25-inches (32mm); 1/2-inch drive
Amazon.com: Gator Grip ETC-125MO King Gator Socket: Home Improvement