This 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. Burs pictured not included.