Engineered for use in sleight of hand coin magic, every detail has been carefully considered. The diameter, thickness & weight are perfect for coin magic. The milled edge enhances grip for great handling, making your sleights easier and more efficient. The finishes have been carefully selected to ensure the coins would slide effortlessly over each other while keeping the 'chatter' down to a bare minimum. Grinder Coins are fast becoming the preferred choice for many top working magicians. The edges have great grip due to the precision milling, making moves such as classic palms a breeze!