The Matco Tools 5-pc 3/8" Drive Metric 6-Point ADV Mid-Length Magnetic Universal Impact Socket Set, No. SBMUP56V, is ideal for removal of transmission bellhousing bolts and can be used to remove exhaust collector/manifold flanges. A 150 degree chamfer on the socket drive end provides better grab, constant pressure, and easier use during automotive repairs. The metric impact socket set contains 13mm, 15mm, 16mm, 17mm, and 18mm magnetic universal sockets, and the high-visibility size markings quickly identify the sockets.