G13-890 G13890 Square Surgical Retractor Blade Curved Flat 6" G13-875 G13875 Square Surgical Retractor Blade Curved Flat 3" G13-876 G13876 Square Surgical Retractor Blade Curved Flat 4" G13-877 G13877 Square Surgical Retractor Blade Curved Flat 5" G13-891 G13891 Square Surgical Retractor Blade Curved Round Standard 2"