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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Gecko Gauge Artisan Kit - 5/8" Fiber Cement Siding & Hardie HZ6

Product ID: 11857158

Details

Brand
PacTool
Color
Silver
Global Trade Identification Number
Item Weight
0.68 kg
Item dimensions L x W x H
2 x 3.5 x 8
Material
Heavy-duty or

📏Adjustable 1/4 inch increments

🔒Damage-free friction-cam hold

🛠️One-person installation ease

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Description

🦎 Nail it solo, nail it perfect—Gecko Gauge has your back!

BUILT TO ENDURE - Heavy-duty aluminum frame withstands harsh jobsite conditions and supports full 12' fiber cement boards.
DAMAGE FREE GRIP - Innovative friction-cam mechanism secures siding firmly without marring primed or painted surfaces.
HANDS FREE PRECISION - Slide, lock, and nail with zero layout hassle—your second pair of hands on every project.
PRO GRADE EFFICIENCY - Cut labor time and fatigue with a tool trusted by siding pros for over a decade.
CUSTOMIZABLE REVEAL SPACING - Fine-tune siding reveals at 1/4 inch increments for flawless, level alignment every time.

The PacTool Gecko Gauge Artisan Kit is a professional-grade siding installation tool designed for one-person use with 5/8" fiber cement siding, including James Hardie HZ6. Featuring an adjustable gauge with 1/4 inch increments and a patented friction-cam mechanism, it securely holds up to 12-foot siding boards damage-free. Crafted from durable aluminum, this kit streamlines installation, reduces fatigue, and ensures precise, level siding reveals—making it a must-have for efficient, high-quality siding projects.

Specifications

ASIN	B00D3PUE6E
Best Sellers Rank	#8,518 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Siding Building Material
Brand	PacTool
Brand Name	PacTool
Color	Silver
Customer Reviews	4.6 out of 5 stars 1,153 Reviews
Global Trade Identification Number	00645646902013
Included Components	Artisan Gecko Gauge
Item Dimensions	2 x 3.5 x 8 inches
Item Highlight	For 5/8" fiber cement siding including James Hardie HZ5. Lap siding gauge with mounting clips for professional installs.
Item Type Name	PacTool SA902A.01 Artisan Gecko Gauges
Item Weight	0.68 kg
Item dimensions L x W x H	2 x 3.5 x 8 inches
Manufacturer	General Tools
Manufacturer Part Number	SA902A01
Manufacturer Warranty Description	Limited Lifetime, See more details at generaltools.com
Material	Heavy-duty plastic or metal alloy
Material Type	Heavy-duty plastic or metal alloy
Model Number	SA902A01
Number of Items	1
Set Name	Mounting Kit
Style	ALUMINUM
Style Name	ALUMINUM
UPC	645646902013
Unit Count	1 Count

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R4603

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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