Patent ID: 8292372

Claim:
A holder for coupling a tool to an aperture in a block, the holder comprising: a shank having a first end and a second end, said first end being configured for connecting with a degradation tool, said shank having an outer surface; a bore formed in said shank and extending from said second end toward said first end, said bore having an inner surface spaced from said outer surface; a shank wall defined by said inner surface and said outer surface, said wall having a wall thickness; and a first recess formed in said inner surface and a second recess formed in said outer surface, said first recess having a first depth between five percent and ninety percent of said wall thickness, said second recess having a second depth between five and ninety percent of said wall thickness, said first recess and said second recess being proximate said second end and extending along a length of said shank, wherein said recesses provide compliancy to the shank of the holder allowing the shank of the holder to be press fit into the aperture of the block.