Walking Airplane Groover – 8" x 8" Square End, 1" Double Bit (No Bracket)8 x 8 Airplane Groover Double Bit has 1 inch bit depth, 1 2 inch bit width, and made of high quality cast aluminum with a broken in face. Airplane groover with deep bit no bracket. 8" x 8" Walking Airplane Groover, Square End 1" Double Bit (No Bracket) This Walking Airplane Groover measures 8" x 8" with a square end and 1" double bit. Sold without bracket, it provides durable performance and accurate grooves for concrete finishing. Ideal for