Sanford Prismacolor Sets

High quality artists' grade colored pencils made by Sanford/USA.

Their smooth, wax based leads allow intense colors and smooth blendings. Because of their outstanding characteristics, they are favored by many artists and designers.
 
And if you like the softness of Prismacolor Premier, but not the fact that the leads tend to break when you sharpen them - the trick is the right sharpener, which does not bend and twist the soft waxy lead too much.

Prismacolor Premier colored pencils are sold in a range of 132 colors and a colorless (not pigmented) pencil "colorless Blender" which is not included in the sets.

Years ago, the british company Berol sold these pencils under the trademark Karismacolor. They looked a little different (the pencils were coated colorless and beveled at ne end), but the leads were identical to the Prismacolor Premier.