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4V USB Lithium™ Cordless Caulking Gun (Bare Tool)

RCG4-0

Bring a clean, polished finish to border edges all around your home with the 4V USB Lithium™ Cordless 310ml Caulking Gun, it'll deliver an effortlessly smooth and consistent finish every single time!

£59.99
In Stock
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3 Year Guarantee
3 Year Guarantee
Exclusive offers direct from manufacturer
The Finishing Touch For Every Project
Introducing the first ever battery powered Air Caulk Gun which doesn't sqeeze the application out of the cartridge but pressurises the air instead but gives the exact same result. The 4V USB Lithium™ Cordless Caulking Gun is designed to make sealing in tight spaces effortless, leaving a perfectly clean finish everytime.

The variable airflow control allows you to match the flow to the task, giving you greater accuracy and consistent sealant lines (only accepts 280–310ml cartridges), while anti-drip technology helps reduce excess for a cleaner result with less waste.

Compact and lightweight, it can finish jobs around your home bigger caulking guns simply can't.

The RCG4-0 is a bare tool and only includes the 4V USB Lithium™ Caulk Gun. No battery or charger included.

The Most Compact Caulk Gun On The Market
Measuring a supremely compact 28cm in length, versus all other caulking guns on the market, it will reach into places like those can't e.g. easily around sinks, baths, and toilets
Pressurised Air Powered
Uniquely, it features a built-in compressor which pressurises the air within the chamber, forcing the application out of the cartridge at a smooth and controllable flow rate
Anti-Drip Technology
Achieve a mess-free finish when applying caulk and silicones, thanks to the Caulk Guns Anti-Drip technology which instantly stops the flow when the trigger is released meaning clear up time for you
Variable Flow Rate Control
Use the caulk guns variable speed to select the perfect flow rate to suit your application and giving you complete control
Runtime
With a 2.0Ah battery the Caulk Gun will apply 15 full 310ml silicone tubes
Features & Specifications
FEATURES
  • Measuring a supremely compact 28cm in length, versus all other caulking guns on the market, it will reach into places like those can't e.g. easily around sinks, baths, and toilets
  • Uniquely, it features a built-in compressor which pressurises the air within the chamber, forcing the application out of the cartridge at a smooth and controllable flow rate
  • Achieve a mess-free finish when applying caulk and silicones, thanks to the Caulk Guns Anti-Drip technology which instantly stops the flow when the trigger is released meaning clear up time for you
  • Use the caulk guns variable speed to select the perfect flow rate to suit your application and giving you complete control
  • For use with caulk and silicone tubes from 280ml to 310ml (max)
  • On-board puncture rod for clearing nozzle blockages
  • As part of the USB Lithium™ system powering your everyday, this tool can be powered by any 4V USB Lithium™ battery which is also a 2in1 power bank so you can also recharge mobile devices on-the-go!
Performance
Max ouput force30
Power Source
Battery pack capacity (Ah)-
Battery typeLi-ion
Charger includedNo
Charging time (min)No charger supplied
No. of batteries supplied0
Power4V
Weight
Weight (without battery) (kg)0.62
Weight with battery pack (EPTA) (kg)0.68 (RB4L30)
Noise
Sound power level (Lwa)(dB(A))91
Sound power level uncertainty (dB(A))3
Sound pressure level (Lpa)(dB(A))83
Sound pressure level uncertainty (dB(A))3
Vibration
Vibration level (m/s²)0.9
Vibration uncertainty (m/s²)1.5
Base Information
Article Number5133006531
EAN Code4892210240828
Power4V
Standard equipmentPuncture rod
Supplied inOver 75% recycled cardboard carton
What's In The Box
x1
RCG4-0
4V USB Lithium™ Cordless Caulking Gun (Bare Tool)
RCG4-0
x1
Over 75% recycled cardboard carton
Standard equipment
Puncture rod

How long will my tool run for?

Find out which battery is right for your tool and application

Select batteries and add them to your basket.

No. of caulk tubes used

Number of caulk tubes used

Customer Review Videos

Reviews

4V USB Lithium™ Cordless Caulking Gun (Bare Tool)

RCG4-0
(3)
(1)
(0)
(0)
(0)

4.8

4 Reviews

Danny Cooper13/11/2026

great gives smooth even application.

Unhappy06/10/2026

I brought this instead of a manual gun and it worked perfectly for siliconing my bathroom

David whitton16/09/2026

Better control with this gun over a manual one ,and the different settings over the speed of flow is good hardly any wasted sealant a good buy on my part.

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