Maxtech 52096MX Quick Connect Hole Saw Set, 11-pc Quick-Draw Adaptor for quickly changing sizes of hole saws without unscrewing mandrel Bi Metal Hole Saw Sizes: 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-1/2, 1-3/4, 2-1/8, 2-1/4. 1x Quick-Draw Adaptor, Safety Glasses Convenient Carrying Case for all parts Safety glasses made of Polycarbonate Works with all ANSI Standard Bi Metal Hole Saws