Cosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 4 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 4 purple stems is what is visible when the dart is fully assembled. Shaft length: 28mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 1 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 1 purple stems is what is visible when the dart is fully assembled. Shaft length: 13mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 3 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 3 purple stems is what is visible when the dart is fully assembled. Shaft length: 24mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 7 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 7 purple stems is what is visible when the dart is fully assembled. Shaft length: 38mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 8 locked purple stems have a flat top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 8 purple stems is what is visible when the dart is fully assembled. Shaft length: 42mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 2 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 2 purple stems is what is visible when the dart is fully assembled. Shaft length: 18mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 5 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 5 purple stems is what is visible when the dart is fully assembled. Shaft length: 31mmCosmo Fit Shaft Gear in purple are made from a polycarbonate resin to strengthen the stem at both the screw thread and the base of the top. These size 6 spinning purple stems have a rounded top to allow the flight to rotate and the slim stem profile is concave in the centre of the stem, before widening where it meets the flight. The given length of these size 6 purple stems is what is visible when the dart is fully assembled. Shaft length: 35mm