WorkZone Slate Call The WorkZone Slate Call is assembled using a combination of superior adhesives to create one of the best-sounding plastic pot calls available at an economical price. Built for consistency and reliability, this call delivers realistic turkey tones you can trust in the field. Designed to be extremely user-friendly , the WorkZone Slate Call is easy to run and effective for callers of all skill levels, helping you bring a longbeard down a Dead End road .