Great for chamfering and shaping various materials, this SK11 board file features a sturdy zinc alloy body and a special blade with holes, which prevents clogging for efficient grinding. This tool's blade has a slightly curved construction that allows for a light and smooth cutting. Depending on the direction the blade is attached to the body, this tool can cut in either a push or a pull stroke.This quality board file is suitable for plasterboard, calcium silicate board, and wood. To attach a blade, simply loosen the screws then hook the L-shaped metal fitting on one side of the blade into the recess on the front of the main body. Hook the other end of the blade then tighten the screw back.Replacement blade sold separately.Approximate dimensions and product data:• Body material: Zinc alloy• Blade material: Carbon tool steel SK7• Blade size: 140x42mm• Compatible spare blade: SK11 SRCB-1Made in TaiwanPlease note: Make sure to exercise caution when using and replacing the blade, as mishandling the blade may cause injury. Cut-proof gloves and garments are recommended.