PRO SET: $12.99 (Includes THREE versatile arcs, 1 NYLON MID-FLEX Manatee shape (appx .79 mm gauge - a sweet strummer!) 1 DELRIN HEAVY Archpoint shape (appx. 1. mm guage nice use w electric bass) and 1 DELRIN MEDIUM Hummy shape (appx .79 mm - precise and versatile!) Arcs in this set may have a “weathered” finish, they’re brand new.