Accessory Base for Router Models 891 and 892. Replacement Base for Combination Kit Models 893PK, 894PK and 895PK. Offers through-the-column dust collection for efficient dust removal and improved bit and line visibility. Machined brass bushings and steel guide rods provide a smooth, controlled plunge stroke. 6-position adjustable turret enables stepped or repeated plunge cuts. Flat side on base allows user to work in tighter spaces and provides a straight reference point. Clear Lexan sub-base provides long term durability and excellent visibility. Sub-base center hole accepts standard Porter-Cable template guides