Compact ball head equipped with a 3157N quick-release camera plate * Strong die-cast construction, precision-machined aluminum housing * Extremely hard phenolic resin ball provides smooth movements across all tilt positions * Single ratchet locking knob for 360-degree pan and a double groove for +90 to -90-degree tilt movements * Plate has 1/4-20-inch male thread, and head to tripod attachment is 3/8-inch female