33° collated angle nails.
Works with several brands of pneumatic tools, check for availability:
Bostitch® MCN150 (up to 1 1⁄2"), MCN250, F33PT
Grip-Rite® GR150 (up to 1 1⁄2"), GRSB150-1 1⁄2 (up to 1 1⁄2"), GR250, GRSB250-2 1⁄2
Hitachi® NR65AK
Paslode® PF150S-PP (up to 1 1⁄2"), F250S-PP
Senco® HN150 (up to 1 1⁄2"), HN250