Bernstein tric slotted screw holders bernstein 4 408 this 200 x 4mm tric screw holder from bernstein is suitable for inserting slotted screws into awkward or hard to access places simply push the lever and insert blade into the slot and release lever the screw is retained tightly in position and can then be inserted securely into the hole bernstein 4 408 retaining screwdriver slotted 200 x 4mm