DeWALT DW55025 6 1 4" X 15" Cordless Diamond Core Bit w Recessed Grooves Generator Plug 000 Column Diameter 4 1 2 in 000 Column Diameter 4 1 2 in Spindle Taper (in x TPI) MT 3 Spindle Travel 6 in Spindle Distance to Base 44 1 2 in Spindle Distance to Table (Max) 30 1 4 in Table Travel 20 in T Slots Number and Size 3 and 5 8 in T Slot Centers 7 7 16 in Table Size (Lx W) 22 x 18 3 4 in Work Table Weight Capacity 154 lbs Base Dimensions 27 x 19 in Base Slots Number and Size 2 and 5 8 in Dimensions (L x W x H) 38 Apron side shafts ride in oilable bearings that improve tolerance and make the apron last longer (1) 6 1 4" x 15" Core Bit DRILL ACCURATELY Recessed Grooves Milled Into Body Of The Bit