CAMP Block Chalk
Here's what other sites are saying:
Camp Block Chalk helps keep your hands dry so you can climb your best.
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. SPECIFICATIONS of the Camp USA Block Chalk Weight: 2.0 oz / 56 g Grind: Block ALL CLIMBING SALES ARE FINAL.
C.A.M.P. Block Chalk are 2 ounce blocks of ultra-pure chalk. Many climbers prefer breaking and powdering blocks of chalk.