Using 7003 grade aluminum, Impulse is a step-straight full metal yo-yo.
As a counterpoint to the step round profile of the Colossus III, Impulse is the step straight variation of Top Yo's love affair with the 7003 aluminum alloy. 7003 sits between standard 6061 and the ultra-durable 7075 aircraft aluminum, so you can have premium material quality without paying a premium pricetag.
Compared to the rounded, heavier-feeling Colossus III, the straight and light Impulse flies on the wind. It's very interesting to play with both and compare how weight distribution alone makes such a difference in a yo-yo's playfeel. Impulse is a pretty average-sized model, so it'll fit well into just about any seasoned player's hand, but it also makes a great first metal throw. For speedy play and lots of control, you can't do better for your money!