Handy Block, 4-1/2 By 6 Inches | HOL-348.00 Ideal for organizing burs, needle files, beaders, mini brushes and more Made of cured hardwood with rubber pads on the bottom Has 88 holes for different tools Each hole is 1/8 inch in diameter to accommodate 1/8 inch or 3/32 inch 4-1/2 inches by 6 inches