Yep! That's a resin slab all-right! I have Suckadelics one-off resin Glunk that comes in it's on custom box with masking tape straps to hold the Glunk from oozing out.. Let me know if your interested.
Holy tits that pic is big... I guess there's no automatic resize Plastic hunter, I wish I could tell what I was even looking at Just a blob of resin? I think after getting this foot-long, 2 inch think piece of plastic that I should refrain from buying anymore chunks
