FLEX FX4221-Z

The FLEX FX4221-Z is FLEX's 24V Compact (Trim) Router Tool Only, listed with a collet of 1/4 in. Each figure below comes from FLEX's own pages, with a link to where it appears.

See it compared

What a router is for. Bosch Power Tools writes: "Fixed-base routers are ideal for edge routing and precise cuts, while plunge routers allow the bit to start above the material and plunge down into the cut, providing more versatility for tasks like mortising or inlay work."

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See it at FLEX: FX4221-Z

FLEX's own page for the FX4221-Z. Not a paid link.

FX4221-Z specifications published by FLEX (7)

Motor: BrushlessTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Voltage: 24VTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Speed: 16,000 - 31,000 RPMTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Collet: 1/4 inTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Plunge depth: 1.97 inTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Included: FLEX 24V Compact Router [FX4221-Z], Spanner (2), Edge Guide (1), Dust Shroud (1), Big Subbase (1), Centering Cone (1)TRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Weight: 3.5 lbs (w/ fixed base, no battery)TRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)

As published by FLEX, read on 2026-09-28. Makers revise their tools; check FLEX's current specification and manual before you buy.

From the FX4221-Z manual and FLEX's product page (5)

Collet size: 1/4 inTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Speed: 16,000 - 31,000 RPM; 6 settingsTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Depth range / adjustment: Fixed depth range 1.97 in; adjustment 1/64 inTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Electric brake: YesTRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)
Weight: 3.5 lbs (w/ fixed base, no battery)TRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)

Each row is our short reading of a passage on FLEX's pages, linked to where it appears.

Before you buy the FX4221-Z

Power supply. FLEX lists 24V for the FX4221-Z. Check the manual for the circuit FLEX calls for.

Guides that cover routers

Compare the FX4221-Z with

FX4221-Z vs OF 1010 REBQ-Plus (578017)

The FX4221-Z beside the Festool USA OF 1010 REBQ-Plus (578017), row by row. Both are routers, compared on the 7 figures published for both.

FX4221-Z: questions answered from FLEX's specification

What voltage does the FLEX FX4221-Z run on?

FLEX lists the FX4221-Z at 24V. FLEX's manual gives the supply the FX4221-Z needs.

Source: TRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)

How much does the FLEX FX4221-Z weigh?

The FLEX FX4221-Z weighs 3.5 lbs (w/ fixed base, no battery), by FLEX's figure.

Source: TRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)

What comes with the FLEX FX4221-Z?

FLEX lists included for the FX4221-Z as: FLEX 24V Compact Router [FX4221-Z], Spanner (2), Edge Guide (1), Dust Shroud (1), Big Subbase (1), Centering Cone (1).

Source: TRIM ROUTER STACKED LITHIUM KIT | FLEX (FX4221)