Dual-sided brush handles with screw-on brush heads. The Master Tech Tool contains:

Sable Brush for Acrylic Sculpting and Overlays
Sable Acrylic Design Brush for Nail Art
Nylon Gel Application Brush for Gel Application
Nylon Clean Up Brush
4 Brush Covers
1 Chemical Resistant Handle and a Case to Store all the Brush Heads and Handles