Gai Tronics 13306 101 Weatherproof Re entrant Horn 1.5 ft equivalent air column 6620 Item Spade Drill Bit Set Item Spade Drill Bit Set Measurement System Fractional Inch Material Machining Carbon Steel Finish Machining Bright (Uncoated) Cutting Direction Right Hand Primary Material Application Wood Material Steel Alloy Drill Bit Material Carbon Steel Application wood drilling Number of Pieces 6 Drill Style Spade Sub Brand Speedbor Shank Type Machining Hex Adjustable Blade No Nail Cutting No Number of Drill Bits 6 Decimal Equivalent 0 Sockets Pliers Included In Set Diagonal Cutting Pliers Includes 1 3 8" 18 UNEF Thread (Female) for Driver Connection GAI Tronics provides loudspeakers designed for the reproduction and broadcast of voice communications and pre recorded tones and speech messages