brit road garage
Banned
I know I must sound like a noob but I don't really know how these are made and what are the benefits/draw backs of them are can anyone tell me?
okay would you recommend one?
Absolutely. I generally stay away from HF but these ratchets are a real gem. Once you start to use one you may find that they become your go to ratchet for ordinary tasks.
I have yet to see any threads about how these ratchets have failed in normal use.
darn you guys...now I have to have one
yup, happened to me too. I bought the 1/4" and been wanting to go back for the 3/8" ever since. Drink the Koolaid! It's good! 
+1. I like these HF ratchets better than anything else in my box, including SO.
I've actually used them on every tough or rusted bolt that I would use a steel ratchet, and they have held up well. They're ratchet mechanism is as smooth as any. And if I do break it, I can afford to buy another one.
'dale
There's a lot more to "non-sparking" safety requirements than simply being "non-metal." In a pinch most composite ratchets may be fine or at least better. Most non-sparking tools have to be manufactured from very specific materials, or materials treated in specific ways. Most non-sparking tools aren't steel and don't have steel parts unless those steel parts are specially treated or unexposed. Non sparking requirements may also require non-static materials.
My understanding was composite ratchets were more about making the ratchets lightweight, and more ergonomic. JimDon's comment about cold weather conditions also makes sense.