This unique design of feeder arm is very strong due to the dual fixing points. It features anti-snag knuckles as well for less line tangles.
The Pro feeder arm is very easy to adjust and will make feeder fishing more comfortable in most situations.
 

All OFFBOX 36 brackets come supplied with 30mm round, 25mm round & 23mm XS square inserts. They will fit 36mm round with inserts removed. 
Original Offbox pro inserts can be used by fitting  inside the 30mm insert.