Reamer pusher question

[colchester]

On the Bald Eagle reamer holder/pusher , is the surface that the pusher contacts flat or does it have a radius that matches the pusher. Im trying to visualize how it works

 

[nhkuehl]

Holder surface that contacts pusher...

is flat. nhk

 

[colchester]

Thanks for the reply . I think I will try that style holder