When PowerPro engineers began developing a new PowerPro hollow-core line, their goal was simple: Create the next generation of performance hollow-core line with superior structure, durability and connection strength. The outcome is Hollow-Ace. With Hollow-Ace, anglers can make a highly efficient knotless splice that achieves strength translation near 100% compared to 65% to 70% with a typical knot. Additionally, Hollow-Ace is much easier to thread than other hollow-core products. Fish with confidence, fish with PowerPro.