Quick view 5/16" Insert Bits, Tamper-Resistant Drilled Spanner Drive Diameter (Nominal): 5/16"Recess Size: #10Product Class: Fastening ToolsOrder: Insert Tools Category: Insert BitsSystem of Measurement: US UnitsBrand: Aspen Fasteners®Form and Design: 1/4" Hex ShankDrive Style: Tamper-Resistant Drilled Spanner... $41.35 Compare
Quick view 1/4" Insert Bits, Tamper-Resistant Drilled Spanner Drive Diameter (Nominal): 1/4"Recess Size: #10Product Class: Fastening ToolsOrder: Insert Tools Category: Insert BitsSystem of Measurement: US UnitsBrand: Aspen Fasteners®Form and Design: 1/4" Hex ShankDrive Style: Tamper-Resistant Drilled Spanner... $39.21 Compare