Review on YaeTek Wedges Feather Concrete Splitter by Jose Guevara

Although I've never split rocks with one hand or seen them split rocks before, it works. The hardest part of the job is drilling the holes. Through trial and error, I was able to drill holes (3"-4" OC) with Bosch (HC5020) 5/8" SDS MAX (or Milwaukee) drill bits to a depth of 4" (min) with a DeWalt combo Impact Drill with 50ft 12AWG Ext. Cable with GFI Socket. To cool, lubricate, and clean your drill bit (and prolong its life), use a garden hose with some water running very slowly into the drill hole. Pull the bit during intermittent drilling to clear the hole/bit and allow new clean water to enter the drilled hole. Note: 5/8" bits have 2 carbide tips forming an X while 9/16" bits or smaller bits only have a carbide tip which causes them to wear out faster. Also, the 5/8-inch bit allows the wedge and fingers to go deeper into the hole, appearing to drive the splitting force deeper (i.e., more effectively) into the rock. If the hole is less than 4 inches deep, the main wedge will appear to hit the bottom of the hole before the full spring wedges take effect. Overall it works well as these 2,000+ pound (ton) plug and feed wedges break through rocks and small boulders well.