Base Length : 2.22 in (56.4 mm), Base Width : .98 in (24.9 mm), Compatible Thread Sizes (All) : #6,M3, Distance Between Fixing Holes : 1.50 in (38.1 mm), Hole Diameter : 3.8 mm (0.15 in), Inside Width : 2.00 in (50.8 mm), Material Flammability Standard : UL94 V-2