How do you put this on? Is it tricky or difficult for a non-technical person?

It's easier, actually, than putting on your rear wheel. Just get the chain in the roller wheel of the device, slide it into the rear chain stay dropout, then lock the quick release lever. If you want more or less tension in the chain you can simply adjust your rear derailleur to lower or higher gear and rotate the crank.

i have one. no need if you have a thru axle. simply use an old adhesive bandage spool and your thru axle. I use mine mostly for transport

That would definitely work too!

Is there a bearing in the contraption, or does the plastic wheel just spin on the axle?

No bearing; although, otherwise well made. The plastic wheel spins on a metal axle. The chain rides on the plastic wheel which is free to move sideways when shifting gears. This makes it easier to clean the derailleur linkages as well as the chain.

Will it work on my 6KU track bike?

Probably. It's designed to work with quick release axles. Your bike as bolt on axles. It will not work with thru axles. It is adjustable for the thickness of the drop out. If you still have the factory bolt on axles , you'd have to undo the bolts with a wrench, remove the rear wheel and then use this hub. To put the wheel back on, you'd do the reverse. If you're not familiar with the terms "quick release axle", "bolt on axle", "bicycle drop out" a quick search of Youtube should help. You could also show take your bike to a local bike shop, show them a pic of this item and ask them if it would work.

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Park Tool DH-1 Dummy Hub Tool, blackone, Black

Park Tool DH-1 Dummy Hub Tool, blackone, Black

Product ID: 47984651

Details

Brand
Park Tool
Colour
Black
Item weight
0.13 Grams
Material
Metal
Mounting type
Braze-On Mount

🔧Supports chain widths up to 6.8mm

🚲Fits rear dropouts replacing rear wheel

⚙️Metal construction for durability

KD 11.28

Duties & taxes included

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Description

⚙️ Keep your chain clean and your ride smooth—because every detail counts!

PRECISION FIT - Slides effortlessly into rear dropouts for a secure, bounce-free hold
TRUSTED BY PROS - Top-rated with 4.7 stars and a bestseller in cycling hubs—join the elite riders
DURABLE METAL BUILD - Crafted from robust metal to withstand rigorous workshop use
COMPACT LIGHTWEIGHT - At just 0.13 grams and 15.2 cm length, it’s easy to carry and store
SEAMLESS CHAIN CLEANING - Replaces your rear wheel to stabilize the chain for flawless maintenance

The Park Tool DH-1 Dummy Hub Tool is a precision-engineered metal accessory designed to replace your bike’s rear wheel during chain cleaning and transport. Compatible with chain widths up to 6.8 mm, it fits securely into rear dropouts to prevent bouncing and ensure stable maintenance. Lightweight and compact, this black metal tool is a top-rated bestseller trusted by cycling professionals worldwide.

Specifications

ASIN	B00NQ9H6JK
Best Sellers Rank	20,658 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 2 in Cycling Hubs
Brand Name	Park Tool
Case Material Type	Metal
Colour	Black
Country Of Origin	USA
Customer Reviews	4.7 4.7 out of 5 stars (2,245)
Global Trade Identification Number	00763477002709
Included Components	power tools
Item Dimensions L x W x H	15.2L x 7.6W x 7.6H centimetres
Item Type Name	Tools
Item Weight	0.13 Grams
Manufacturer	PARK TOOL
Manufacturer Part Number	373-241
Material Type	Metal
Model Number	DH-1
Mount Type	Braze-On Mount
Number of Items	1
Number of Teeth	16
UPC	751738442043 789692467383 763477101105 763477174970 763477002709 744288866179 763477101037 784427670557 783761028802 696735952396 736557323780

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