Rowan Engineering Air Stripper with 1/2 x 20 UNF 14mm long thread. With adjustable cone of up to 8mm forward or backwards. Black anodized aluminum.177 cal
Pellets can have Air Turbulence in front during propulsion that negatively affects the accuracy of your shot. The Rowan Engineering precision machined air stripper effectively spreads the air so that it does not affect diabolo.