3/8 Inch Drive Adapter/Reducer Set (2-Piece) BoltsandNuts.com They have a slight wedge

They have a slight wedge shape that grips both sides of the slot

Automotive Repair

Contractor grade drill bit manufactured from M1 High Speed Steel and for use in a wide range of materials in the iron and steel families such aluminum

which allows for better fastener engagement in more situations • Works With Friction Ring or Detent Pin Anvils – Smooth walls inside the drive end and a detent pin hole make the sockets compatible with both drive tool anvil types • Prevents Fastener Round-Off – Radiused corners prevent fastener round-off by applying force to a fastener's flat sides

Part Number: 75X100DPAPL

3/8 Inch Drive Adapter/Reducer Set (2-Piece) BoltsandNuts.com They have a slight wedgeConnect drive tools to sockets and accessories to expand your range of available tools Polished, chrome plated finish easily wipes clean and is highly resistant to corrosion Beveled drive ends help guide adapter or reducer smoothly onto drive tool Four detent grooves provide a secure connection with the drive tool Spring loaded retaining balls latch into sockets and hold them securely in place Radiused corners inside drive avoid stress concentrations