Can anyone tell me where to get the extensions for these to do 12" siding . I am in Australia so need to get them shipped here

Bishop supply Panama City Florida.

This tool has horrible reviews. Does it work at all? Has anyone made it work?

Yes. I made it work by hooking rubber bands from the side bolts under the lever to hold the tension to keep the gauge in place. While it sounds a little Mickey Mouse, the gauges are actually a huge time saver especially if you are putting the siding up by yourself. If you are using pre-finished Artisan Hardie, the other tip I can give you is to slip a thin shim between the boards at the base of the gauge to lever the boards out a little when installing or removing the gauges. This keeps it from marking the boards and requiring touch up. I would definitely recommend these if you with the above provisions.

Is the green one is plastic? Or aluminum

Plastic. They also are longer than these, which may or may not be good. The plastic has more adjustments as well, but these could be drilled to offer more possibilities. The aluminum ones seem to scrape more when you remove them, so would not be as good on pre-painted boards.

would these work with the sa90338 or the sa903?

No, design and construction do not match up.

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PacTool SA902A01 Artisan Gecko Gauge Siding Mounting Kit - For Use with 5/8-Inch Fiber Cement Siding, James Hardie's Updated HZ5 Series - Lap Siding Gauge - Essential Siding Tools

Product ID: 11857158

Details

Brand
PacTool
Color
Silver
Global Trade Identification Number
Item Weight
0.68 Kilograms
Item dimensions L x W x H
2 x 3.5 x 8
Manufacturer
General Tools

📏1/4-inch adjustable reveals

⚙️Friction-Cam locking power

🛠️12-ft siding support

Description

🦎 Nail your siding game solo with Gecko Gauge — the ultimate hands-free precision tool!

BUILT TO LAST - Heavy-duty aluminum and friction-cam mechanism withstand drops and hold 12-foot boards securely.
ONE PERSON POWER - Transforms solo siding jobs into smooth, efficient workflows—goodbye labor hassles.
HANDS FREE PRECISION - Slide, lock, and nail with perfect spacing every time—no extra help needed.
PRO GRADE EFFICIENCY - Trusted by pros to speed up installation and deliver consistent, professional results.
ADJUSTABLE REVEAL CONTROL - Fine-tune siding reveals from 4 to 8 inches in 1/4-inch increments for flawless alignment.

The PacTool SA902A01 Artisan Gecko Gauge is a durable, aluminum siding mounting kit designed for 5/8-inch fiber cement siding, including James Hardie's HZ5 series. Featuring a patented friction-cam mechanism, it securely holds up to 12-foot siding boards, enabling one-person installation with adjustable reveals in 1/4-inch increments. This professional-grade tool reduces labor time, ensures consistent spacing, and is built to withstand tough jobsite conditions, making it an essential upgrade for efficient, precise siding projects.

Specifications

ASIN	B00D3PUE6E
Brand Name	PacTool
Color	Silver
Customer Reviews	4.6 4.6 out of 5 stars (1,138)
Global Trade Identification Number	00645646902013
Included Components	Artisan Gecko Gauge
Item Dimensions	2 x 3.5 x 8 inches
Item Type Name	PacTool SA902A.01 Artisan Gecko Gauges
Item Weight	0.68 Kilograms
Manufacturer	General Tools
Manufacturer Warranty Description	Limited Lifetime, See more details at generaltools.com
Material Type	Heavy-duty plastic or metal alloy
Model Number	SA902A01
Style Name	ALUMINUM
UPC	645646902013
Unit Count	1.0 Count

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