NordicTrack 55 Lb. Select-A-Weight Adjustable Dumbbells (NAMSDB20) vs PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
NordicTrack 55 Lb. Select-A-Weight Adjustable Dumbbells (NAMSDB20)
Lifters happy to start at ten pounds per hand
A pair of selector dumbbells giving 15 settings per hand between 10 and 55 pounds, with moulded storage trays included and a matching stand sold separately. The 10 pound handle bar sets the floor of the range, and NordicTrack does not publish an owner's manual for this model online.
Published specifications
- Maker page: model NAMSDB20, 15 weight adjustments per dumbbell
- Maker page: adjusts from 10 lb to 55 lb; 10 lb handle bars
- Maker page: storage tray included; stand listed separately
- UK page: model NAMSDB20-INT, 2 kg or 2.5 kg steps, 5 kg to 25 kg
- Listing: sold as a pair, 11.4 x 19.4 in, 1.25 in handle diameter
- Listing warranty text: two years, repair or replacement, shipping paid
Strengths
- Fifteen settings per hand with a single selection system
- Storage trays are included rather than sold separately
- NordicTrack publishes the exact model number on its own page
Caveats
- Nothing lighter than 10 pounds, because the handle bar alone weighs that
- No NordicTrack-hosted manual found, so no published safety or care rules
- The stand that raises them off the floor is a separate purchase
Read the full NordicTrack 55 Lb. Select-A-Weight Adjustable Dumbbells (NAMSDB20) guide
PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair
Home lifters who want to expand the same handles later
A pair of pin-selected block dumbbells running from 5 to 50 pounds per hand, with two 2.5 pound micro weights inside each handle for the half steps. PowerBlock's manual is strict: lift from the centre grip only, keep the pin tethered, and never drop them, because dropping voids the five-year warranty.
Published specifications
- Listing: sold in pairs, Stage 1, 5 to 50 lb per hand
- Manual: handle alone is 5 lb; two micro weights of about 2.5 lb each
- Manual: selector pin must stay on its tether cord at all times
- Manual: lift from the centre grip only; raise 5 in and inspect the pin
- Manual: five-year limited warranty, original purchaser, home use only
- Stage 2 kit reaches 70 lb, Stage 3 reaches 90 lb, both sold separately
Strengths
- Expandable to 70 or 90 pounds per hand using the same handles
- Micro weights give 2.5 pound steps at the light end of the range
- PowerBlock publishes the full owner's manual and a weight range chart
Caveats
- Dropping them from any height voids the warranty, in the maker's own words
- No stand included, and neither document gives the length at each setting
- Expansion kits fit only Elite EXP, not other PowerBlock dumbbells
Read the full PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair guide
How to choose between them
Choose the NordicTrack 55 Lb. Select-A-Weight Adjustable Dumbbells (NAMSDB20) if your situation matches: Lifters happy to start at ten pounds per hand. Its main caveat: Nothing lighter than 10 pounds, because the handle bar alone weighs that.
Choose the PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair if your situation matches: Home lifters who want to expand the same handles later. Its main caveat: Dropping them from any height voids the warranty, in the maker's own words.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- NordicTrack product page for the 55 Lb. Select-A-Weight Dumbbells (NAMSDB20) Source for NordicTrack 55 Lb. Select-A-Weight Adjustable Dumbbells (NAMSDB20)
- NordicTrack UK product page for the Select-A-Weight Dumbbells (NAMSDB20-INT) Source for NordicTrack 55 Lb. Select-A-Weight Adjustable Dumbbells (NAMSDB20)
- PowerBlock Elite EXP Owner's Manual, Version 2, updated 06.2025 Source for PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair
- PowerBlock Elite EXP Weight Range Guide Source for PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair
- PowerBlock instruction manual index listing the Elite EXP documents Source for PowerBlock Elite EXP Adjustable Dumbbells, Stage 1, 5-50 lb Pair
Primary sources checked .