This is a pack of twelve replacement Redcat Racing 3x10mm Button Head Self Tapping Phillips Screws, and are intended for use with the Redcat Racing Caldera SC 10E, Caldera XB 10E, Caldera 10E, Shredder XB, Shredder XT, Shredder SC, Ground Pounder, Aftershock 8E, Aftershock 3.0, Aftershock 3.5, Backdraft 3.5, Backdraft 8E, Caldera 3.0 Earthquake 3.0, Earthquake 3.5, Eathquake 8E and Reactor RS 3.3.