1,Aluminium Alloy Material: The router table insert plate for woodworking benches is made of aluminum alloy, which is durable, not easy to rust, and can be used for many years. 2,Applicable Moddels: This woodworking table insert mounting plate is applicable for 690 890, for 618 3, for bosch1617 series machines. 3,For High Accuracy Cutting: The router table insert plate is suitable for high accuracy cutting and woodworking router. 4,Easy to Install: The router table insert plate has multiple mounting screw holes. The screw holes are finely processed. During installation, you only need to drill holes at the corresponding screw installation location, and install the screws between the board and the workbench. 5,Labor Saving: Trimming machine tool is simple to operate and labor saving, making woodworking work perfect. Practical and necessary cutting tools for workers. Item Type: Router Table Insert Plate Material: Aluminium Alloy Gross Weight: 1263g / 44.6oz Product Size: 300x235x10mm / 11.8x9.3x0.4in Mounting Hole Pitch: 4-1/64 inch Middle Inner Hole Pitch: 92mm / 3.6in Applicable to: For 690 890, for 618 3, for bosch1617 series machines 1 x Router Table Insert Plate 2 x Router Insert Ring 1 Pack x Fastening Screw(16 Pieces) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.