Premium Home Improvement Tools: Reducing Rings add bit-opening options to your Kreg Router Lift Versatile Workshop Accessory: Reducing rings come in many sizes: 3/4 inch, 1 3/8 inch, 1 5/8 inch, and 2 1/8 inch openings Accessible Carpentry Tool: This table insert plate accessory has one "blank" ring to create a zero-clearance ring Premium Woodworking Tools: These workshop accessories include a molded storage tray with slots Premium Kreg Tools: We offer products that help woodworkers close the gap between idea and outcome