Hohner Harmonica Instant Workshop Toolkit, toolkit for professional players and harmonica service technicians, incl.: Combination Deriveting Tool special pliers to remove the old rivet and also punch a hole into the windsaver to glue over the top of bolt head. Comes with two different interchangeable bits; Reamer 1.4 to ream up the holes in reed plate and reed so that they fit the new stud bolt for mounting the replacement reed; Universal Holder holds the reamer and is also needed to set the stud bolt in the plate; Drill Bit needed for deburring reed plate and replacement reed; Tap 1.4 cuts an M1.4 thread into the reed plate; Screwdriver to affix the stud bolt; Star Nut Spanner to secure the special star nut with which the replacement reed is affixed; Special Nut 1.4 screws onto the stud bolt to fix the replacement reed into place; Stud Bolt M1.4 screws into the reed plate to durably mount the replacement reed.,