An electrosurgical pencil , comprising: an elongate housing ; at least one activation switch supported on the housing, each activation switch being configured and adapted to selectively activate the electrosurgical pencil; an electrocautery blade having a proximal portion configured to couple to the housing, the electrocautery blade configured to electrically connect to an electrosurgical generator; characterised by : a hub coupled to a distal portion of the housing and defining a lumen configured to receive at least a portion of the electrocautery blade therein; and a sheath coupled to the hub and defining a lumen configured to receive at least a portion of the electrocautery blade therein, the hub configured to rotate relative to the housing to move the sheath between a first position to cover the electrocautery blade and a second position to expose a distal portion of the electrocautery blade, wherein the hub is configured to rotate in a first direction to axially move the sheath to the first position and in a second, opposite, direction to axially move the sheath to the second position, wherein the sheath and the hub are part of a sheath system ; and wherein the electrocautery blade and the sheath system are removable from the housing when the sheath is in the first position. an elongate housing ; at least one activation switch supported on the housing, each activation switch being configured and adapted to selectively activate the electrosurgical pencil; an electrocautery blade having a proximal portion configured to couple to the housing, the electrocautery blade configured to electrically connect to an electrosurgical generator; characterised by : a hub coupled to a distal portion of the housing and defining a lumen configured to receive at least a portion of the electrocautery blade therein; and a sheath coupled to the hub and defining a lumen configured to receive at least a portion of the electrocautery blade therein, the hub configured to rotate relative to the housing to move the sheath between a first position to cover the electrocautery blade and a second position to expose a distal portion of the electrocautery blade, wherein the hub is configured to rotate in a first direction to axially move the sheath to the first position and in a second, opposite, direction to axially move the sheath to the second position, wherein the sheath and the hub are part of a sheath system ; and wherein the electrocautery blade and the sheath system are removable from the housing when the sheath is in the first position. a hub coupled to a distal portion of the housing and defining a lumen configured to receive at least a portion of the electrocautery blade therein; and a sheath coupled to the hub and defining a lumen configured to receive at least a portion of the electrocautery blade therein, the hub configured to rotate relative to the housing to move the sheath between a first position to cover the electrocautery blade and a second position to expose a distal portion of the electrocautery blade, wherein the hub is configured to rotate in a first direction to axially move the sheath to the first position and in a second, opposite, direction to axially move the sheath to the second position, wherein the sheath and the hub are part of a sheath system ; and wherein the electrocautery blade and the sheath system are removable from the housing when the sheath is in the first position. <EOS>