Attributes . Bull Head Design is Shorter than a Pipe Head, Reducing Potential Interference in Blind Center Hole Applications and Ensuring that the load is Positioned Over the Bearings for Optimum Strength, Designed for Turning Pipes, Tubes, and Parts with Extra-Large Center Holes, Head Diameter is 1/8 in Over Nominal Size, Enabling these Centers to Cover a Wider Range of Workpieces, Two Matched Angular Contact Bearings Provide Good Thrust and Radial Load Ratings . Names