Dogyu Stone Splitting Feather and Wedge 12.5mm #03864

• Now available in sizes matched to anchor drill bits! • For breaking up garden stones • Removing concrete structures • Breaking up large stones found during excavation • Removing stones after disasters [About using plug and feathers] As a rule, use plug and feathers sized to match the concrete drill bit you use. Although it depends on the material being worked, for example with an 18mm concrete drill bit, use 18mm plug and feathers as the standard. Drill holes at least as deep as the full length of the plug, spaced about 10 to 15cm apart.