rikon 20-800h | 8 benchtop jointer with 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 rikon power tools 8” benchtop jointer 20-800h 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′′ & 2-1/2” dust ports, front safety on/off switch and two push blocks.