Choosing waste deck fill hardware for a boat usually comes down to a few questions: Will it hold up to sun and saltwater? Will it fit the hose or deck opening you already have? And do you want a cap that's easy to operate every time? The Boat Marine Waste Deck Fill 2in 1.5in 316 Stainless Steel Keyless Cap Hardware is one option worth considering.
Quick verdict
At USD 45.49, this is a direct, no-frills price for a single waste deck fill unit. For that price you get a cap assembly that should address the basic need of replacing or upgrading your boat's deck waste fill. It's a simple, self-contained hardware purchase rather than a multi-part system.
Who it suits
This works best if you're replacing a worn-out deck fill cap, updating the look of deck and cabin hardware, or starting a refit where you want a clean finish. It also fits a project where you want a straightforward replacement part for the waste deck fill.
Boat Marine Waste Deck Fill 2in 1.5in 316 Stainless Steel Keyless Cap Hardware

This unit is built around 316 stainless steel, a corrosion-resistant material for marine environments. The keyless cap design means you can open the fill without a separate key, and the 2-in-1 configuration points to both 2-inch and 1.5-inch sizing. As a new unit, it's sold as a single waste deck fill. The trade-off is that the 2-in-1 flexibility may be more than you need if your boat's opening is only one of the two sizes.
What stands out
316 stainless steel is the most meaningful detail here. It's a corrosion-resistant material for wet deck conditions, which is exactly what you want from a deck fill. The keyless cap also stands out because it removes the need to carry a small specialty key; a direct open-and-close action is enough. The fact that it's sold as new gives you a fresh part to work with, not a used or salvaged component.
Meaningful trade-offs
The main trade-off is that the 2-in-1 sizing gives you two size ranges in one unit, but your existing deck fill opening is probably one specific size. You'll likely use only the 2-inch or the 1.5-inch setting, so the extra flexibility may not matter in your particular installation.
Bottom line
At USD 45.49, this is a practical way to replace a deck waste fill if the size configuration fits your boat.