Husqvarna PRO 45 Double bumper segment support for smooth cutting performance. The design of the segment provides a reduced contact surface in the concrete. This gives a quick start in a controlled manner, when applying a new blade. The segments are designed for our diamond chain saws, for best performance. Every chain rivet is protected to seal out abrasive slurry that cause chain stretch. Packaging Height: 1.772 in Packaging Length: 6.693 in Packaging Width: 5.512 in