Hand chalks are used to prevent your hand grip from slipping. It gets harder to hold the cue tight and perform a nice stroke with sweaty hands, therefore, applying some chalk on your hands and cue shaft would do the trick. Silver Cup Billiard/Pool Cone Chalk is uniquely designed to keep your hands smooth, and dry. It reduces the friction between your hand and the cue shaft caused by moisture. It is designed as a cone shape for more hand chalking convenience and it also helps prevent dust collecting.