Our HANDY BLOCK is a 4-1/2" x 6" block of cured hardwood with 88 holes for organizing burs, needle files, beaders, mini brushes, etc. Each hole is 1/8" in diameter to accommodate either 1/8" or 3/32" shanks. This block is slanted so the user can see all instruments at a glance. The HANDY BLOCK also features stay-put rubber pads on the bottom to keep it from sliding. A EURO TOOL original!