Look for appliance pulls. They will be the sizes you want.

Hickory Hardware has lots of styles of hardware. Many of them come in several different sizes. I used their 18” Greenwich pull on my 36” wide drawers. I used other sizes on smaller drawers. Their longer pulls are reasonably priced. Appliance pulls are usually quite expensive.

This picture shows 3 of the different sizes on one of my drawers

You don't need pulls that large. I don't like them, personally.

Anglophilia, My cabinets are builder grade and I know if I use 2 smaller handles I will wind up pulling on only one and risk pulling the drawer off track or bending the tracks. What do you suggest?

I have one 5” pull on 24” drawers and it is fine.

You don’t need two pulls! One 5” pull will do the job just fine!

You don't need a large pull on a 25" drawer. It will look oversized and not right with the drawer. One 5" or 6" pull is all that is needed. Builder grade or not.

FYI: I have 24" drawers with a single 3 7/8" pull on them and they're fine.

6 inch maximum. I second Hickory Hardware as a good source. The ones I picked came in several different sizes. I’m still happy after 5 years.

I would need to see your kitchen I like longer pulls on drawers but then I do not like decorative pulls just simple stainless bar pulls and I love the ones from Lee Vally they come in all kinds of sizes.Badgergal is right to make the pulls in prportion to the cabinet or drawer IMO a 6” pull on a 25” drawer looks way too small