Lewmar 49030001 30Cst Two Speed Self Tailing Chrome Winch. The Lewmar 'Wavespring' self-tailer combines their renowned and gentle wave grip feature with self adjusting springs. It handles today's smaller diameters, as well as the traditional larger Dacron composite ropes. A sleek, minimum-friction feeder arm provides absolute snag-free operation. Mounting Instructions: 5 x M6 (1/4 in) c'sk head screws on 113mm (4 7/16in) PCD. Lewmar recommends that the rope enters onto the drum at an angle of 5 degrees to 10 degrees to the base axis of the winch. To achieve this angle it may be necessary to use a base wedge when installing the winch.