The FREE 1.5 HP 4 1/2" Grinder Trial Kit Includes: 3M Cubitron II Flap Disc 967A - 55605 3M Cubitron II Fibre Disc 982C - 27400 3M Cubitron II Cut-Off Wheel - 66531 3M Cubitron II Depressed Center Grinding Wheel - 66587 3M Scotch-Brite Clean and Strip XT Disc - 33194 3M Scotch-Brite Light Grinding and Blending Disc - 60349 3M Disc Pad Faceplate Ribbed - 28443 3M Disc pad Hub - 28476 3M Disc Retainer Nut - 02618 3M TN Quick Change Fibre Disc Backup Pad - 02140