CAMP Block Chalk
Here's what other sites are saying:
Camp Block Chalk helps keep your hands dry so you can climb your best. Perfect for climbers who prefer to break up their own chalk. Ultra-pure magnesium chalk. Each block is 2 oz.
Camp USA Block Chalk FEATURES of the Camp USA Block Chalk Super dry camp climbing chalk Each block is SOLD INDIVIDUALLY! Sorry for yelling about it.
C.A.M.P. Block Chalk are 2 ounce blocks of ultra-pure chalk. Many climbers prefer breaking and powdering blocks of chalk.