Rikon 20-800HSP 8″ Helical-style Benchtop Jointer8 Benchtop Jointer 20 800HSP has a 6 row helical style cutter head with 16 CARBIDE, 2 edge insert cutters for super cutting action, flat surfacing results, and easy knife changes. Table extensions expand the work surface from 30 1 2 to 51 1 2. Features rigid, all metal construction, machined aluminum tables, a quick depth setting mechanism with scale, adjustable fence that tilts from 90 to 45 quickly and accurately, spring loaded safety guard, 4 & 2 1