Shop › Armstrong T30 L-Shaped Tool Image 1 of 1 Armstrong T30 L-Shaped Tool NZ$9.99 Slim and compact whenever you need it, in a pocket or PFD vest out on the water. Sized for Torx T30 screws and barrel nuts Purchase Added! Slim and compact whenever you need it, in a pocket or PFD vest out on the water. Sized for Torx T30 screws and barrel nuts