Actually it's kinda easy to distinguish from PEEK, my Petri v1 & v2 both have full PEEK surrounding the entire deck. They're an off white color. The delrin around the sapor's 510 screw is clear. Also my TM atty and doge v2 came with extra PEEK insulators and they're the same off white color as all other PEEK I've seen.
I don't trust Wotofo at all, they're the kinda company that'll do anything to cut corners & make maximum refund. I sent them a few emails to their CS & they never got back to me when the issue happened. No CS what so ever.
I've had atty problems before with Kennedy & Hobo Customs - both companies had excellent CS, great communication & the "our bad, send it in and we'll replace it" mentality. Both Kennedy & Hobo Customs had my issues resolved within a week. Wotofo never even responded to an email.
Tom.
Not to be disagreeable but I have a drip tip with a Delrin base under a Stainless drip tip, and it is identical to peek in coloration.
I LOVE my little Wotofo Freakshow Mini but I wouldn't push the wattage too high.
The ONLY time I use the Freakshow is for tasting juice.