Dixon Ticonderoga Core-Lock Colored Pencils Ticonderoga® Core-Lock™ Colored Pencils Unique technology securely fastens the color core and wood casing together for a lock-tight bond. Cores will never slide out or twist, allowing a smoother color laydown every time. Soft leads for easy shading and blending. Packaged in an attractive storage tin. PMA and AP Certified nontoxic. Made in U.S.A. 48-Color Set