GENERAL PURPOSE FLOOR LOCK, 9 1/2 IN FOR CASTER MOUNTING HEIGHT, 8 3/8 IN FLOOR LOCK RETRACTED HEIGHT, 9 3/4 IN FLOOR LOCK EXTENDED HEIGHT, 8 IN FOR WHEEL DIA., B MOUNTING PLATE BOLT HOLE PATTERN, 4 IN X 4-1/2 IN MOUNTING PLATE SIZE, STEEL, 2-5/8 IN X 3-5/8 IN INSIDE BOLT HOLE SPACING, 3 IN X 3 IN OUTSIDE BOLT HOLE SPACING