Use the wheels in this Fretz® mini-wheel set to hammer out small curves and to form bezels. The wheels have 5mm shanks and fit into the Fretz H-2 tool holder (not included). This set includes eight miniature wheels in four diameters and three thicknesses. The set comes in a convenient 6" x 3" wood organizer block and includes one of each wheel size: 10mm dia. x 5mm; 10mm dia. x 3mm; 13mm dia. x 5mm; 13mm dia. x 3mm; 16mm dia. x 8mm; 16mm dia. x 5mm; 19mm dia. x 8mm and 19mm dia. x 5mm.