Walking Airplane Groover – 24" x 8" Round End, 3/4" Double Bit (No Bracket)24 x 8 Airplane Groover Round End Double Bit has 3 4 inch bit depth, 7 8 inch bit width, and made of high quality cast aluminum with a broken in face. Round End Airplane groover with the big bit with no bracket. 24" x 8" Walking Airplane Groover with 3 4" Double Bit No Bracket Contractor grade Walking Airplane Groover built for precision concrete finishing. This 24" x 8" round end groover includes a 3 4" double bit and is sold without a bracket,