Alignment coupler for a 40mm bar with 12mm tool holes

These alignment couplers join two bars together when setting up a pair of bores that are too far apart for one bar to reach, we find them especially useful for for loading shovel arms, and the dreaded high tip bucket bores. 

These have precision honed bores to a H8 tolerance, and are a tight sliding fit on a 40mm boring bar 

500mm long with a very heavy wall thickness

Manufactured  here in the UK 

These can be made for a 50mm bar, please get in touch