Overall strength is enhanced by using polycarbonate resin. It's now easier to tell between locked and spinning... Spinning shafts have a rounded top and Locked shafts have a flat top. Also, the top of the locked shaft is now in a matte finish.
If you install flights onto a Locked style shaft and then onto a Spin style shaft, you may notice the flight is looser than normal and may pop off easier. Avoid this by using separate flights for Locked and Spin shafts.
Only work with Fit Flights
All Dart Shafts are Sold in a set of 3
Shaft length is the overall length not including threads
Thread is approximately 40% stronger
Top where flights lock on are approximately 30% stronger