A woodworking bench tool set contains 1 countersink tray, 4 countersink rings and some fixing screws. Made of aluminum alloy, it is durable to use and will not easily rust. Convenient center hole for aligning the cutter so that it is centered in the drill bit hole. Facilitates precise drilling and mounting of every router. It's easy to use and gets the job done. Features: 1. A range of woodworking machines includes 1 banknote tray, 4 countersink rings and some fixing screws. 2. Made of aluminum alloy, it is durable and not easy to rust. 3. Convenient centering hole for aligning the cutter, so that it is in the middle of the hole. 4. Makes drilling and mounting each router easier. 5. It is easy to use and gets the job done right. Specifications: Material: Aluminum alloy plate, plastic rings. Dimensions: approximately 235mm x 120mm x 8mm. Installation hole spacing: 60 x 70mm. Application: suitable for 60 x 70mm wood router - Hole spacing: M372, 3709 or 3703MT370, M1P-FF-6 or 02-6 or 03-6 or 04-6, R3-6, Wu619, etc. Contents: 1 router tray tray. 4 router insert rings (in which 1 ring is in the plate). 1 pack of fixing screws.