Tokyo Powder Industries Black Chalk (135g)

Tokyo Powder Industries Black Chalk (135g)BLACK is Tokyo Powder's strongest all rounder, giving superior high friction regardless of the season or rock type. One of Tokyo Powder's most popular chalks, it offers excellent friction for both sweaty and dry hands Tokyo Powder Industries: "At the beginning of development, we thought about how to suppress the moisture returning to the microscopic gap between the hand and the rock, which was dried by chalk, and repeated trial production and

BLACK is Tokyo Powder's strongest all-rounder, giving superior high friction regardless of the season or rock type.

One of Tokyo Powder's most popular chalks, it offers excellent friction for both sweaty and dry hands

Tokyo Powder Industries:

"At the beginning of development, we thought about how to suppress the moisture returning to the microscopic gap between the hand and the rock, which was dried by chalk, and repeated trial production and verification to create BLACK. Of course, I should have been able to get the effect I was aiming for, but in 2020, after completing the experiment of the "non-slip sand ball" project at the Japan Agency for Marine-Earth Science and Technology, I found that the chalk itself has high friction performance.

The exact reason for this high frictional force is unknown, but scholars speculate that the subtle mix of scaly grains and normal grains seen under an electron microscope may be the secret to the strong coefficient of friction. That's what I'm talking about!"