Hand Splitting Stone breaking Tools Hand Splitter, wedge and shims, plug and feathers. These traditional tools have been used for eons in the stone industry and are still among the most cost-effective tools for splitting stone. Also called Wedge and Feathers. These tools are the oldest and still one of the best ways to split stone. Small Wedge and shims in 5/8â?²and 3/4â?²sizes are good for stone yards or stone masons who want to reduce their rocks to workable sizes 1â?²,1-1/4â?²,1-3/8â?²are for splitting large rocks. Our high quality wedge and features are made for splitting granite and other hard stone. Hole diameter design: 14mm to 38mm Length: 125mm to 600mm