Advantages • Hex shape provides exceptional torque and pull-out resistance • Best design available for use in rotational molding •Space between the hexes provides excellent flow characteristics, making it ideal for use with fiber-resin plastics •Inside diameter is reamed for a smooth fit on locating pins The Yardley BI-SERT insert is designed to provide permanent metal threads in molded plastic parts. The unique hex shape provides exceptional torque and pull-out resistance. *Check with our engineering department for tolerances