Self-tapping, zinc-coated T20 Star screws are perfect for joining your workpieces together, ensuring a secure hold. PocketScrewKit700 includes 700 pcs. of the most common sized pocket hole screws.T20 Star, Pan Head & Washer Head Pocket Hole Screws Star design enables quick hardware changeout for faster results Allows for more torque to be transferred to the screw, improving performance Star head screws resist cam-out better than standard Phillips head or slot head screwsCoarse and Fine Head Screws Coarse threads are ideal for softwoods or plywoods Fine threads are ideal for hardwoodsT20 Drivers Includes 3? and 6? Magnetic T20 Star DriversReusable Plastic Storage Carrying Case With designated cavities in the case for each size screw and a screw selection chart