Magnet Source MDCD10CR75 Magnet Counter Display, 7-1/4 in L, 7-1/4 in W, Black

Magnet Source Magnet Counter Display, Ceramic, Black, 7-1/4 in Length, 7-1/4 in Width, 8-1/8 in Height, Includes: (300) 3/4 in Dia x 0.1875 in THK Discs, (200) 3/4 in OD x 1/4 in ID x 1/4 in THK Rings

Features:

• Contains 500 powerful, permanent ceramic blocks or discs with strength tester mounted to front of display