Herbert Screws – Hexagonal Home / Herbert Screws – Hexagonal Herbert Screw 2.7mm/3.5mm Herbert Screw 3.5mm/4.5mm Herbert Screw 4.5mm/5.5mm Herbert Screw 5.5mm/6.5mm Related products Herbert Screw Instrument Set 4.5/5.5mm & 5.5/6.5mm Herbert Screws Instrument Set For Star Drive Herbert Screw Instrument Set 2.7/3.5mm & 3.5/4.5mm Instrument Set for 4.0mm Cannulated Cancellous Screws