finally found the perfect spinner for my Impact and Abbra. It is plastic has lightened backplate comes in different colors I got orange for my impact. It is 3.6" diameter fits Impact/Abbra perfectly - it weighs 55 grams and cost $38. My tru-turn 3.5" is slightly smaller than front of Impact cost $75 with lightened backplate/menz cut slot and weighs 95 grams. my 3.5" carbon fiber spinner cost $75 and weighs 65 grams and has a funny shape. don't know how it will hold up to electro starters the plastic is very thin but it should work great on my zdz40 gaser hand start.