Meet the FLEX FX4321-Z 16Ga Straight Nailer — Bare Tool designed for moulding and trim work, packing cordless power into a compact, easy-to-handle package. On FLEX’s 24V platform, this brushless nailer delivers dependable performance without the hassle of a compressor.

Key Features & Design

• Cordless 24V Brushless Power — high-speed performance for precise finishing without a hose or compressor.
• High-Speed Power — drives up to 3 nails per second with zero ramp up time, so you won’t waste a second on the job.
• Extended Runtime — drives up to 1,500 nails on a single charge with a 2.5Ah lithium-ion battery.
• Quick Depth Adjustment — ergonomic depth adjustment lever makes it easy to set the ideal nailing depth on the fly.
• Illuminated Workspace — triple LED light delivers shadow-free illumination in dark corners and tight spaces.
• Firing Modes & Visibility — toggles between bump and sequential firing; nail indicator shows how many nails remain in the magazine.
• Dry-Fire Lockout — prevents blank firing and protects your work when the nail supply is exhausted.
• Tool-Free Jam Clearance — quickly clears jams without tools for maximum on-the-job efficiency.
• Compact & Lightweight — designed to conquer tight spaces with minimal fatigue; heavy-duty belt clip can be mounted on either side with a lead-in profile.
• Versatile Fasteners — accepts 3/4" to 2-1/2" 16-gauge fasteners for a wide range of trim and moulding applications.
• The FLEX Advantage — 20% more power with 24V lithium, 25% longer runtime with THERMA-TECH™ heat management, up to 50% faster charging with high-power, dual fan chargers.
• Cross-Compatibility — FLEX 24V cross-compatibility with all FLEX 24V batteries, chargers, and tools.
• Warranty — FLEX Limited Lifetime Warranty when registered within 30 days of purchase (through December 31, 2024).

Specifications

• Voltage (V) 24 V
• Motor Type Brushless
• Nailer Type Finish Nailer
• Driving Mechanism Air Spring - Pre-Pressurized Cylinder
• Fastener Diameter 16Ga
• Fastener Length (inch) 3

Kit Contents

• (1) 16Ga Straight Nailer [FX4321]
• (1) Belt Clip
• (3) No-mar Tip
• (1) Soft Bag

Note: This listing is for the tool itself (Tool Only). For full kit configurations and included accessories beyond what’s listed, please refer to the corresponding FLEX kit listings.