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HCO Outdoor Products Spartan Stealth Camera Low Profile Mini Mount$19.95
The Stealth is only 3-3/4? long with a weight of 4 ounces. The Stealth has a cork screw tip and CNC machined augur for quick easy installation. The thread length is 2-1/4? so you can have your camera right up against the tree for maximum concealment.
The thread transitions from a taper to straight for maximum holding power.