The Nytro Brolly Arms come in two sizes, short and long and are designed to securely attach your broody to your seat box or feeder chair. This ensures that both you and your bait and tackle are protected, regardless of the weather. The two knuckles and aluminum frame provide excellent stability and the arm's length allows you to rotate the brolly to your desired position. Compatible with nearly any seat box, thanks to the supplied inserts (25mm & 30mm) or without an insert for 36mm fittings.