... 12D#, 13#, 14#, 15#, 15A#, 15C#, 15D#, 16#, 18#, 19#, 20#, 21#, 22#, 22A#,23#, 24#, 25#, 25A ... scalpel contains a stronger temporary forward lock position to prevent uncontrolled retraction when contacting with bone during ... use, an additional notch to hold the blade more securely in the passing ... blades. Blade shapes are available from 9 to 26, 60 and 70. GOOD QUALITY Safety scalpel by ...