Great White Z - Zirconia & Lithium Disilicate Adjustment Kit. Includes 8 GWZ diamond burs plus autoclavable block: 4x GWZ Diamond FG Burs (one each: 368-023F, 368-023M, 850-018F, 850-018M). 4x Jazz Polishers (RA shank, one each: Medium Flame, Medium Cup, Fine Flame, Fine Cup. Bur block with 4 Zirconia burs, 4 polishers