Milwaukee
M18 FUEL SAWZALL Reciprocating Saw 2821-20
$249
Released 2020-11
Best Reciprocating Saws · head-to-head
M18 FUEL SAWZALL Reciprocating Saw 2821-20 vs ONE+ 18V Cordless Reciprocating Saw P519
A sourced, side-by-side comparison. ONE+ 18V Cordless Reciprocating Saw P519 is cheaper at $39.5. Every spec and price links to its source.
Ryobi
ONE+ 18V Cordless Reciprocating Saw P519
$39.5Cheaper
Which is better: the M18 FUEL SAWZALL Reciprocating Saw 2821-20 or ONE+ 18V Cordless Reciprocating Saw P519?
The ONE+ 18V Cordless Reciprocating Saw P519 wins 1 of the 1 specs we compare head to head; the other wins 0. The ONE+ 18V Cordless Reciprocating Saw P519 is the cheaper at $39.5. The ONE+ 18V Cordless Reciprocating Saw P519 both leads on specs and costs less — the straightforward pick.
See M18 FUEL SAWZALL Reciprocating Saw 2821-20 on Amazon See ONE+ 18V Cordless Reciprocating Saw P519 on Amazon
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | M18 FUEL SAWZALL Reciprocating Saw 2821-20 | ONE+ 18V Cordless Reciprocating Saw P519 |
|---|---|---|
| US price | $249 | $39.5 |
| Brand | Milwaukee | Ryobi |
| Released | 2020-11 | — |
| Power source | cordless | cordless |
| Amps or voltage | 18 V | 18 V |
| Strokes per min max | 3000 | 3400 |
| Stroke length (in) | 1.25 in | 1.0 in |
| Orbital action | No | — |
| Tool less blade change | Yes | Yes |
| Brushless | Yes | No |
| Weight (lb) | 6.8 | 3.75 |
| Release | 2020 | — |
Sources — M18 FUEL SAWZALL Reciprocating Saw 2821-20: milwaukeetool.com (verified 2026-06-20). ONE+ 18V Cordless Reciprocating Saw P519: ryobitools.com (verified 2026-06-20).
What's the difference between the M18 FUEL SAWZALL Reciprocating Saw 2821-20 and ONE+ 18V Cordless Reciprocating Saw P519?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Strokes per min max: M18 FUEL SAWZALL Reciprocating Saw 2821-20 3000 vs ONE+ 18V Cordless Reciprocating Saw P519 3400
- Stroke length (in): M18 FUEL SAWZALL Reciprocating Saw 2821-20 1.25 in vs ONE+ 18V Cordless Reciprocating Saw P519 1.0 in
- Brushless: M18 FUEL SAWZALL Reciprocating Saw 2821-20 true vs ONE+ 18V Cordless Reciprocating Saw P519 false
- Weight (lb): M18 FUEL SAWZALL Reciprocating Saw 2821-20 6.8 vs ONE+ 18V Cordless Reciprocating Saw P519 3.75