st just stands for super tough, atleast what i was told.

the speed hunters are the two inch versions, much like the blazers, but in the quickspin design.

i went to quickspins and havnt looked back.. awesome design, greatly improves accuracy, and seem to hold up to getting thwacked by other shafts getting stacked on eachother

only problem i have with them is they are $20 for a pack of 36, so automatically, im spending $40 on vanes to fletch an already $120 set of shafts,

but its worth it i wreckin