From inside (document excerpt):
User Installation Instructions for Vehicle Honda Civic. CD Changer Console Mount Attachment Kit 08B12-S00-101. Application: 2000 Civic 3-DOOR, Publications No.: AII 20459, Issue Date: AUG 1999.
Contents
PARTS LIST
Owner’s Manual CD Changer Attachment (sold separately): P/N 08B12-S00-101
Base bracket 8 Washer-screws, 4 x 6 mm (4 not used)
Adhesive seal sheet
2 Side brackets Locking covers
Protector
BUS cable
4 Cap nuts, 6 mm
4 Rivnuts, 1/4″ – 20 (1 not used)
Bolt, 1/4″ – 20 x 3/4″
7 Cushion tapes
CD Changer Kit (sold separately): P/N 08A06-181-420
TOOLS AND SUPPLIES REQUIRED
#2 Phillips screwdriver
10 mm Combination wrench
7/16″ and 3/4″ Combination wrenches 10 mm and 17 mm Sockets
Ratchet
Diagonal cutters
Flat-tip screwdriver
Felt-tip pen
Utility knife
Scissors
Measuring tape
Small flat-tip screwdriver
Rivnut tool
T/N A911A-365-WXXXX
Torque wrench
Drill
3 mm and 8 mm Drill bits
CD changer Eye protection (face shield, safety goggles, etc.) Center punch
CD magazine