This Target Set is for use with the Bjerrum Screens, SFS-400-S and SFS-401-BW and comprises of red, green, blue and white discs in the following diameters: 

1, 2, 3, 4, 5, 7, 10, 15, 20, 30, and 40 mm. 

The set incorporates a wand to which the targets detailed above individually attach. All items are stored neatly in the provided wallet.