- Hardened core for extra strength and durability - Flexible Torsion Zone absorbs torque peaks and reduces breakage (Torsion bits only) - Extra Grip ribs grip the screw and reduce slipping (specific bits only)
- Pull-down handle; - Reinforced and punched side panel; - 5 compartments on 3 levels; - Compartments protected by a thin foam layer; - Top hole for locking.