For First Time Users

This is a guide for those who have started using caulking guns or are considering using caulking guns in the future.

What is the difference between the standard type (silver handle) and the strong type (black handle) of caulking guns?

Black handle is “Power Gun Type
Recommended for those who want to hit lightly! Even high-viscosity materials can be lightly ejected.
However, the amount of material ejected at one time is less than that of the standard type silver (iron-colored) handle.

The silver (iron-colored) handle is the “standard type.
Recommended for those who want to shoot more!
More injection can be made with a single grip.
The grip is heavier than the power gun when shooting high viscosity materials.
Select the caulking gun (handle) according to the viscosity of the sealant and the amount of injection required.

There are many types of Yamamoto caulking guns and I don’t know which one to choose.

Corresponding guns differ depending on the container of the material.
There are three types of materials: cartridge type, film pack type (sausage type), and pail type.

Cartridge type ⇒ Cartridge gun
Film-pack type ⇒ Film-pack gun
Pail type ⇒ Cylinder gun


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Rakuraku Gun (standard type, silver handle)

For details, please refer to the following document.

How to use the Rakuraku Gun (standard type, silver handle)

How to use Rakuraku Gun (simplified version)

How to use Rakuraku Gun (Strong type, black handle)

For details, please refer to the following document.

How to use the Rakuraku Gun (strong type, black handle)

How to use Rakuraku Gun (simplified version)

How to clean and care for Rakuraku Gun

For details, please refer to the following document.

“How to Clean and Care for Rakuraku Guns.”

About Color Cylinders

The color cylinder comes in four colors (gold, red, blue, and green).



Please see below for compatible products.
Color Cylinder Products

Our Brands

Since our founding in 1923, we have built over a century of history guided by our founder's spirit: “Never compromise on the quality of our pliers.” We combine the skilled craftsmanship of human hands with the rationality of optimizing processes suitable for automation. Driven by our responsibility to preserve Japan's traditional manufacturing heritage for future generations and share it with the world, we unite the power of tool manufacturing professionals. We develop tool brands that support craftsmen and transform the industry.