Is tungsten better than brass for darts?

Yes for slimness. Tungsten is denser, so a 23-gram tungsten barrel is much narrower than a brass dart of the same weight. That means tighter groupings and less deflection off other darts.

Which weight should I pick?

21 grams suits players with a light, quick throw and soft tip conversion. 23 grams is the common middle for steel tip pub play. 25 grams suits players who like a heavier dart that settles into the board.

Do these work on a soft tip board?

No. They have fixed steel tips for bristle boards. Using them on an electronic soft tip board will damage the board and the tips.

What comes in the box?

Three assembled darts with tungsten barrels, nylon shafts and flights. There are no spare shafts, flights or tips included, so plan to buy replacements separately.

How does it compare with a pro-style dart?

It is a simpler fixed setup. Pro darts usually let you change shaft length, flight shape and tip, and often have more grip patterns. The Sidewinder is a solid starter tungsten set rather than a tunable one.

Will the knurled grip wear out?

Knurling on tungsten barrels holds up well with normal use. Deep knurling can smooth slightly over years of throwing, but it outlasts painted or coated grips.