Fastener Series: 16 Gauge 1/2" Medium Crown Bostitch 16S4 Type Staples Collation:Straight Strip. Crown :1/2" Gauge :16 Categories:Medium Crown Staples. Compatibility Spotnails: X1S76-8650, MS76-8650I; Bostitch: 750S4, 850S4, T55S4-1, T40S4-CT, T25-1,...