Excellent fixing function: The multi-function double-layer ply board provides excellent fixing function on a variety of tools. The anti-slide slides into the ramp track slot of the router table or fence and is locked in place by a pair of knobs. Safe and Precise: Thanks to the multi-function multi-layer double-layer, the result is a significant improvement in precision, quality and safety. Practical: Multi-functional double-layer featherboards are suitable for 3rd and 4th milling machine hands. It helps to protect your fingers against kickback, wear and distortion from Feather Board Size: High: 120mm Height total: 210 mm Tilted length: 160 mm Width: 165 mm There are two featherboards in the package Fixing Feather board slides into miter slots in table or router fence and locks unit by adjusting knob Feather boards can be used on a table, table saw, band saw or any other woodworking machine with a miter joint slot. Insert the nib into the slots in the direction of the arrow and adjust the handle to the thickness of the board. Double duster assembly featherboard detail Spring-loaded stopper increases friction in other directions of the board so that it does not slip Material The feathers are made of high-strength and durable engineering plastic. Smooth and curved lines, no burrs Safe Using multiple nibs allows for a smoother and safer process