The Krieghoff Trap Special & Pro Rib Adjustment Wheel Locking Wrench
This is a 1.5mm Hex Wrench used to loosen and tighten the adjustment wheel on the K-80 Trap Special Barrels and also the K-80 Pro Rib Barrels.
You start by slacking the locking screw to allow the wheel to be turned. Then use the wheel to adjustable the height of the rib. Then tighten the locking screw to fix the height position.
