Coarse and microfine bit depth adjustment system with resettable depth indicator.  Exclusive Precision Centering Design centers bit precisely.  Large 3-3/4" base opening plus 2" subbase opening accepts large bits.  Tool-free templet guide adapter for fast and easy templet guide changes.  Magnesium construction, durable and lightweight.  One-piece armature shaft for accuracy and long bit shank capacity.  Comfortable D-handle design with reversible auxiliary handle.  Double insulated,  UL listed,  complies with OSHA.  Includes 1/4" S. R. Collet Chuck, 1/2" S. R. Collet Chuck, 16mm Shaft Wrench, 24mm Collet Nut Wrench, Tool-Free Templet Guide Adapter and Chip Shield. Weight = 11.1 lbs .  Buy this tool at Hechinger Hardware for $176.62