Package Included‎:‎10 x Hex Drive Screw In Threaded Insert BushingsFeatures‎:‎Size‎:‎ M10x25mm‎(‎0.39x0.98"‎)‎Material‎:‎ Zinc AlloyD‎-Type Insert Nuts ‎(‎D Nuts‎)‎ provide a strong permanent thread for wood‎.‎ They are installed by simply screwing the self tapping body into the material‎.‎ The unique external thread ensures strong resistance against pull out and the flanged head prevents splitting of the surfaces and driving the Insert in too farTo install type D insert nuts‎,‎ simply screw the self‎-tapping body into the base material‎.‎ The unique external thread ensures positive locking and offers strong resistance against pull‎-out due to torsion or vibration‎.‎ The Type D Insert Nuts incorporate a flange which prevents splitting of covered surfaces and driving the nut in too farInsert Nuts provide a strong‎,‎ permanent thread for wood and wood based sheet materials