20/22º round head nails, plastic strip, for use in Atro, DuoFast, Fasco, Haubold, Hitachi, Makita, Paslode, Senco,Hilti, Spotnail tools designed for this angle of collation. Examples as follows:

• 2 x 113 ring
• 2-3/8 x 113 galv
• 3 x 121 smooth
• 3 x 131 smooth