can I make .125" joints with this kit?

It does not come with a .125 spacer but you could make one. It could be made of metal or hardwood perhaps and you would have to find a .125 upward spiral milling bit. Do not use a rabbiting bit.

Is there any horizontal adjustment to make the tongues wider or narrower

The jig comes with 3 keys: 1/4, 3/8, and 1/2 inch. You can probably fabricate other sizes in between, but the jig is not big enough to accommodate much lager keys. They have another jig for that.

This picture doesn't match the one on rockler's site -- is this an older version? which one will i receive if i order it?

They only make two models, this one and the XL version which also does 3/4 cuts. There is no 'older' model.

I have a milling table and the distance from the strawberry to the rail where the rockler box joint is squeezed is 13.5 cm. would it be worth my table

Router Table Compatibility: Near edge of router table's miter track must be between 4-1/2'' and 6-1/4'' from the center of the router bit

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Router Table Box Joint Jig - Finger Joint Indexing Keys w/Three Finger Widths ¼”, ⅜” & ½” - Stable MDF Router Fence w/Low-Friction Melamine Coating - Knobs to Lock Platform w/ ¾” Miter Slot

Router Table Box Joint Jig - Finger Joint Indexing Keys w/Three Finger Widths ¼”, ⅜” & ½” - Stable MDF Router Fence w/Low-Friction Melamine Coating - Knobs to Lock Platform w/ ¾” Miter Slot

Product ID: 380054830

Details

Brand
ROCKLER
Color
Yellow
Global Trade Identification Number
Item dimensions L x W x H
12.99 x 11.26
Manufacturer
Rockler
Material
MDF with nylon

📏3 precise finger widths (¼”, ⅜”, ½”)

🧰Low-friction melamine-coated MDF platform

🛠️Solid brass indexing keys for uniform joints

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₪621

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Sold byAmazon IsraelDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Nail every joint with precision and style — don’t let your projects settle for less!

SMOOTH OPERATOR - Melamine-coated MDF platform glides effortlessly, reducing wear and tear for long-lasting use.
COMPLETE PRO KIT - Includes sled, sacrificial fence, knobs, and detailed manual—everything to master box joints like a pro.
LOCK LOAD STABILITY - Ergonomic knobs secure the jig firmly into a ¾” miter slot for rock-solid routing accuracy.
VERSATILE JOINT SIZES - Three finger widths (¼”, ⅜”, ½”) let you customize joints for any small to medium box project.
PRECISION AT YOUR FINGERTIPS - Interchangeable solid brass keys ensure flawless finger joint spacing every time.

The Rockler Router Table Box Joint Jig is a professional-grade woodworking accessory designed for creating strong, tight-fitting box joints. Featuring precision-machined solid brass indexing keys in three finger widths (¼”, ⅜”, ½”), a smooth low-friction melamine-coated MDF platform, and ergonomic knobs that lock securely into a ¾” miter slot, this jig offers repeatable accuracy and durability. Ideal for small to medium-sized box projects, it comes complete with all essential components to elevate your router table setup and deliver flawless finger joints every time.

Specifications

ASIN	B07H7K4PK8
Best Sellers Rank	#60,412 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #116 in Power Tool Accessory Jigs
Brand Name	ROCKLER
Color	Yellow (Yellow)
Customer Reviews	4.3 4.3 out of 5 stars (539)
Global Trade Identification Number	05024763208546
Included Components	Router Table Box Joint Jig
Item Dimensions	12.99 x 11.26 x 3.7 inches
Item Type Name	Rockler 422866 Router Table Box Joint Jig
Manufacturer	Rockler
Manufacturer Part Number	422866
Material Type	MDF with melamine coating, Glass-filled nylon
Model Number	422866
Style Name	Modern
UPC	733175503228 733175295024 733353556985
Unit Count	1.0 Count

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