These are 64mm cast lab sweet / silver knight coated burrs that work for the Turin DF64, Mazzer Super Jolly, Lagom P64 and other grinders that take the Mazzer Super Jolly sized 64mm burrs. These are some of the best burrs that are on the market.
Comparison video showing difference between the 64mm SSP cast lab sweet with silver knight coated burrs, the 64mm SSP Unimodal / All Purpose / Multipurpose red speed coated burrs, and the 64mm SSP high uniformity espresso red speed coated burrs.