Backordered 1 to 2 months. Amazon has the 12-Piece Bosch 1/8" x 2-3/4" Titanium-Coated Drill Bit (TI4135) for $2.69 with free shipping on $25+ or with Prime.

Drills clean, accurate holes in thin materials (up to 1/8") such as sheet metal, ducts, steel, copper, brass, aluminum, plastic, Plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron.