V4/5 to V6 UPGRADE KIT for Bike setup and measurement tool
This kit include the new components required to upgrade a version 5 tool to a Version 6. The new components use the 3/8 socket drive fitting, and are therefore compatible with both the V4 and V5 tool. If you have a V4 tool you do not need the V5 upgrade to use this kit. (The V5 kit enables using a 2 part ruler)
The main component is the dedicated hand position attachment that enables full measure of a bike without the addition of a standard tape measure.
The second component is the floating version of the Shimano adaptor. This is more minor change that makes aligning the tool much easier.
See this page on the website for 3rd party reviews of the product