Power through Tyvek wrap, carpeting, and a host of fastening tasks with the FLEX FX4521-1A 3/8" Stapler Kit. This cordless, brushless stapler is built for pros and DIYers who want serious performance without dragging a power cord around.

Key Features & Design

• Powerful 24V Brushless Motor delivers high-speed performance with zero ramp up time.
• Drives up to 3 staples per second for fast, efficient work.
• Up to 5,000 staples on a single charge with the included 2.5Ah lithium-ion battery.
• Power adjustment dial to easily set the ideal stapling depth.
• Dual LED worklights illuminate dark work areas for precise placement.
• Bump and sequential firing modes give you flexibility on the job.
• Staple indicator lets you see how many staples remain in the magazine.
• Dry-fire lockout prevents blank firing and protects your work when the supply runs out.
• Compact and lightweight design makes tight spaces easier to conquer with less fatigue.
• Belt clip can be mounted on either side with a convenient lead-in profile.
• Accepts 3/8-inch crown size fasteners for versatile fastening options.
• Includes the kit essentials – 3/8" stapler, 2.5Ah battery, 160W fast charger, belt clip, (3) no-mar tips, and FLEX bag.
• 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.
• FLEX cross-compatibility - works with all FLEX 24V batteries, chargers, and tools.
• Warranty - FLEX Limited Lifetime Warranty when registered within 30 days of purchase through December 31, 2024.

What’s in the Box

• 3/8" Stapler [FX4521]
• Onboard screen attachment
• 24V 2.5Ah Lithium-Ion Battery [FX0111]
• 24V 160W Fast Charger [FX0411]
• Belt Clip
• Soft Bag

Specifications

• Voltage (V) 24 V
• Motor Type Brushless
• Nailer Type 3/8" Crown Stapler
• Driving Mechanism Mechanical Spring
• Fastener Crown Size 3/8“
• Fastener Length 1/4" - 9/16"
• Fastener Angle 0°
• Operation Mode Bump/Sequential
• Max. Firing Speed 3 fasteners per second
• Runtime 5000
• Magazine Type Hollowed-out
• Loading Style Bottom Loading
• Max. Capacity 89
• Magazine Angle 0°
• Magazine Material Metal