Machined, chrome-plated brass guide bushes and chrome-plated steel guide plates. Ventilated guide bushes for optimised dust extraction. Includes 8 guide bushes (OD 5/16″, 3/8″, 7/16”, 1/2″, 5/8″, 51/64″, 3/4″ & 30mm), alignment bush (porter cable adaptor), table spacer and 2 x M4 screws. Machined, chrome-plated brass guide bushes and chrome-plated steel guide plates. Ventilated guide bushes for optimised dust extraction. Includes 8 guide bushes (OD 5/16″, 3/8″, 7/16”, 1/2″, 5/8″, 51/64″, 3/4″ & 30mm), alignment bush (porter cable adaptor), table spacer and 2 x M4 screws.