That is because they use a thick, drill-like, spiral to create enough
friction to pull the cork. This heavy spiral can easily crumble a tight
cork--and often does.
The Wing Machine® overcomes this problem
with an ultra-thin, non-stick spiral that moves through the cork almost
frictionless. When the cork is fully penetrated, an automatic gear shift
locks the spiral in place. Then the wings are pressed down, easily
removing the cork--damage free!
And the whole smooth-as-silk
operation of The Wing Machine is visible inside its transparent body.
More than an innovation, The Wing Machine is a revolution in wing