Specification:Putty box width: 25cmAdjustable height of the handle: 98cm~160cmMaterial: Aluminum alloyKnife body material: Stainless steelHandle material: PlasticHow to Assemble and use:1. Make sure the plat box blade is the thickness of a fingernail(1-1.5mm) above the skids. The blade can be adjusted using screws on the blade holder to obtain the necessary height;2. Test that the blade holder can move up and down freely;3. Attach your plat box handle by sliding it onto the box and tightening the two wing nuts;4. Adjust the tension on the blade holder to suit the gauge of compound which is to be used in the machine;5. Assemble with the handle.6. Set the box at a slight angle from the handle and tighten the button fo fix the angle, so the headremains stationary.7. Place the flatbox on the joint and while applying pressure, release the button allowing the box and the handle to find its own natural position.8. Ajust the length of handle: push the button to extend the length(Max. 63.8'').Features:Stainless steel, leak-proof sealing plate, after putty installed, putty can be scraped off after removal.Aluminum alloy material is lightweight and durable, the bottom set roller, easy to operate.Large-capacity putty box, pack more and scrape a larger area.The pressure plate cover has a wide opening for easy cleaning.Package Includes:1x 8.9'' Flat Box1x 40''-63.8'' HandleThanks for shopping in NengceNaUS.If you have any questions, please feel free to contact us.