Walking Airplane Groover – 24" x 8" Square End, Double End with 1-1/2" Bit24 x 8 Double End West Coast Style Airplane Groover has a 1 1 2 inch Bit Depth and 1 4 inch radius. The West Coast Style Airplane Groover is made of high quality cast aluminum face for clean smooth cuts. The Clevis lug makes easy clevis handle attachment. 24" x 8" Walking Airplane Groover Square End Double End 1 1 2" Bit This Walking Airplane Groover is designed with a 24" x 8" square end and a double end 1 1 2" bit for heavy duty concrete finishing.