The bracket is for the pole saw extension handle. There is two on each pole saw handle extension. One before the yellow grip tape begins and one on the bottom where the grip tape ends. 

The small bracket is for the 3.8m Hayate pole saw only

The medium bracket is for the 5.0m Hayate pole saw only

The large bracket is for the 6.1m and 7.7 hayate pole saw only

SKU: Bracket (S) 370-04-67

SKU: Bracket (M) 370-04-68

SKU: Bracket (L) 370-04-69