16 in 1 Metric/SAE Spline Dog Bone Wrench with Magnet by TruePower Double-end dog bone wrenches with 16 wrench sizes in both metric & SAE Metric sizes: 8, 10, 11, 13, 14, 16, 17 & 19mm SAE sizes: 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16" & 3/4" Magnet for holding nuts Open-ended sockets work with nuts on long studs Swivel head sockets work at all angles