Traded the 3320 for this 4044R and the toothbar is quite different from the WR Long model, thought I'd give you some info.
This 6 foot bar weighs 139 lbs compared to about 80 for the old one even though it's a foot longer the weight per foot is much greater.
This HD bar uses different teeth and pins...The teeth are JD FANGGS PN#TF23L, The pins are JD PN#TF23P.
The pins are not roll pins but rather a 3 piece unit called a Series 23 pin that requires a different pin removal and insertion tool. JD PN#TY15994.
A couple of pix follow...