Just a tip. No points involved. When needing metal wheel sets, like building Accurail car kits and getting rid of the plastic, I use these wheel sets exclusively. Even with some RTR cars you may get metal wheels with an NMRA RP25 contour but with a plastic axle, advertised as a non-magnetic axle. Call it whatever you want but it’s still plastic so I install these. They are heavier and add weight to the car, but gaining toward proper weight with a lower center of gravity for better tracking. We are talking very low weight in grams but keep in mind the same physics are at play as in the prototype world but scaled down, like everything else in modeling. These work well with most all manufacturers' trucks but in my experience they perform exceptionally well with Accurail trucks. And with one wheel insulated on each axle it's a simple matter to install wipers for electrical pick-up for any purpose.

Worked fine with my old Bachmann and Life-Like HO cars. I had a few old Bachmann and Life-Like HO cars like tankers and box cars. I knew hey were too light in weight and had worn plastic wheels which constantly led to derailments. I liked the old cars and there very hard to find now days. I sometimes find some old cars for $5.00 and I buy them. These Intermountain wheel sets replaced those old plastic light weight wheels and added the weight and the center of gravity needed to make them track smoothly. Occasionally you may have to ream out the old plastic trucks a bit or tweak them a little to get the cars to run OK. At approx. $4.50 per car there worth it.

These are great wheel sets. Switching all my cars to these wheels. I have had zero issues with the wheels as of yet. They roll freely and effortly. Love the sound they make as well.