#12 x 4" Deck Screws 316 Marine Grade Stainless Steel, Square Drive, Type 17 Wood Cutting Point, Quantity 50, Size Number 12 x 4" Long

Appear to be good screws, as described. It's hard to find 4" stainless steel screws - most non-trade sources don't carry them.Out of 100 screws I ordered, only had one shear off (sounded like I hit a nail) and one head ream out (my fault), which is pretty good for my experience with square drive stainless steel screws. The rest drove with no problem. These are #3 square drive heads.