This ball caster kit includes a black ABS housing, a 1" diameter plastic ball, three dowel pin rollers, two spacers (1/16" and 1/8" thick), and three #2 screw sets. The total height of the ball caster, 1.1", can be increased to about 1.3" using the included spacers. The three included #2 screws can be used to mount the ball caster to your chassis (the distance between the screw holes is 0.69").
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