Greenlee 35715 Specifications:Capacity for Steel Toothed Blade: up to 7/8" (22.2 mm) plywood, wood, acoustical tile and ceiling tile.Capacity for Carbide Grit Blade: up to 7/8" (22.2 mm) drywall, plywood, wood, acoustical tile, ceiling tile, plaster and stucco.Greenlee 35715 Features:Industry's only interchangeable replacement blades.Strong durable back plate.Available in two styles - steel tooth and carbide grit.Made and designed in USA by Greenlee.Use with a power drill to cut large diameter holes for recessed lighting fixtures.Saws use Greenlee Arbor 37156, purchased separately.