Uses Markwell L4 Series 0.025” x 0.020” (0.62 x 0.50 mm) fine wire staples:
L4A-1/4” (6 mm)
L4C-3/8” (9.5 mm)
L4D-½” (12 mm)

Also available:
L4D-1/2” (12 mm) stainless steel (meets Federal specifications).
L4A-ST-1/4” Sabertooth  (needlepoint)
L4C-ST – 3/8” Sabertooth (needlepoint)
L4D-ST-1/2” Sabertooth (needlepoint)