Bench Dog 40-016 ProLift Max Router Top-Adjustment System Router top-adjustment system for even the largest fixed base routers Three integral bit hole sizes (2-inch, 2.6-inch, and 3.7-inch) Blanched ground steel insert plate with electroless nickel surface; cast aluminum housing Speed wrench included; adapter to accommodate motors with diameter less than 4.2-inches separate 8-1/4 by 11-3/4 by 3/8-inches; limited 2-year warranty