A storage assembly, comprising: a housing connectable to a drug delivery device; whereby said housing comprises a first chamber disposed in said housing; a plurality of penetrating members stored in said first chamber; a second chamber disposed in said housing for storing said plurality of penetrating members after being used in an injection; and a transfer drum disposed in said housing for transferring one of said penetrating members from said first chamber to an injection position and from said injection position to said second chamber following an injection; characterized in that said housing comprises an in-feed spring disposed in said housing biasing said plurality of penetrating members stored in said first chamber to a position to be transferred from said first chamber to said transfer drum, wherein a plurality of openings are formed in said transfer drum; wherein a transfer slide is movably disposed in each of said plurality of openings and is adapted to receive one of said penetrating members from said first chamber, said transfer slide being movable between a first position in which said penetrating member is within said housing and a second position in which said penetrating member extends from said housing to perform the injection; and wherein a drive gear disposed in said housing having a protrusion is connectable to the drug delivery device and a driven gear disposed in said housing having a plurality of slots is connected to said transfer drum, such that rotation of said drive gear rotates said driven gear when said protrusion engages one of said plurality of slots. a housing connectable to a drug delivery device; whereby said housing comprises a first chamber disposed in said housing; a plurality of penetrating members stored in said first chamber; a second chamber disposed in said housing for storing said plurality of penetrating members after being used in an injection; and a transfer drum disposed in said housing for transferring one of said penetrating members from said first chamber to an injection position and from said injection position to said second chamber following an injection; characterized in that said housing comprises an in-feed spring disposed in said housing biasing said plurality of penetrating members stored in said first chamber to a position to be transferred from said first chamber to said transfer drum, wherein a plurality of openings are formed in said transfer drum; wherein a transfer slide is movably disposed in each of said plurality of openings and is adapted to receive one of said penetrating members from said first chamber, said transfer slide being movable between a first position in which said penetrating member is within said housing and a second position in which said penetrating member extends from said housing to perform the injection; and a first chamber disposed in said housing; a plurality of penetrating members stored in said first chamber; a second chamber disposed in said housing for storing said plurality of penetrating members after being used in an injection; and a transfer drum disposed in said housing for transferring one of said penetrating members from said first chamber to an injection position and from said injection position to said second chamber following an injection; characterized in that said housing comprises an in-feed spring disposed in said housing biasing said plurality of penetrating members stored in said first chamber to a position to be transferred from said first chamber to said transfer drum, wherein a plurality of openings are formed in said transfer drum; wherein a transfer slide is movably disposed in each of said plurality of openings and is adapted to receive one of said penetrating members from said first chamber, said transfer slide being movable between a first position in which said penetrating member is within said housing and a second position in which said penetrating member extends from said housing to perform the injection; and wherein a drive gear disposed in said housing having a protrusion is connectable to the drug delivery device and a driven gear disposed in said housing having a plurality of slots is connected to said transfer drum, such that rotation of said drive gear rotates said driven gear when said protrusion engages one of said plurality of slots.