Cosmo Fit Shaft Glitter – Juggler. Evolution of the Fit Shaft, the Fit Shaft uses a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. The spinning type still sports the rounded top, while the locked type has changed to a flat shape to help tell them apart. The Juggler range is available in 3 different lengths and 5 different colours. Cosmo Fit Shaft Glitter – Spinning Type – Normal – ClearCosmo Fit Shaft Glitter – Juggler. Evolution of the Fit Shaft, the Fit Shaft uses a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. The spinning type still sports the rounded top, while the locked type has changed to a flat shape to help tell them apart. The Juggler range is available in 3 different lengths and 5 different colours.