Fasco ESBNK-4023-10 21-gauge Galvanized 1/2" Crown Fine Wire Staples with 3/8" Leg (10000 per Box) For Use In: FASCO F1B 84-16; Bostitch TU20-7, Bostitch T27-7 For Use In: Bostitch T28-11; Bostitch T31-2; Senco JN2330 Crown width: 1/2-inch; Leg length: 3/8-inch Chisel Point; Galvanized