High quality 1.1/4″ (31.75mm) fine thread, zinc plated pocket hole screws featuring a gash point for easy installation. The Fine thread screw suits hardwood such as oak, maple, walnut and cherry. These screws are supplied pan head with a Robertson No2 square drive recess ensuring maximum engagement between the driver bit and screw which results in effortless insertion. Supplied in a box of 5000 pieces. Recommended Screw Length; Woodfox pocket hole screws can be used with other brands of jigs, such as Kreg, which use the same square drive.