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SKU 7000045685
Legacy SKU 60980021558
UPC 00051144839780
Part Number 83978

The 3M™ Hookit™ Flexible Marine Fairing Board is a tough yet pliable tool for fine marine fairing and sanding. This lightweight board features a double-handle design that affords a secure grasp and easy handling, with a flexible facing for working smoothly across concaves, convexes and curves. The 4-1/2” x 30” longboard works with 3M™ Hookit™ abrasive sheets, saving time and money when sanding.

  • Lightweight, flexible construction makes the fairing board easy to handle
  • Double handle provides extra control and comfort
  • 4-1/2” x 30” size is ideal for fairing, sanding and finishing
  • Works with 3M Hookit™ abrasive sheets for secure, cost-effective sanding
  • Allows you to reuse abrasive sheets for maximum product life
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On it's way to you September 29   


Minimum Order 1 Item
Order Increment 1 Item
  Very Robust
  Fast Shipping
  Long Lasting Performance
  Industry Low Price
Product Dimensions
Imperial Metric
Width 4 in
Length 30 in
Diameter 0 NP
Shipping Dimensions
Weight 1.7 lb
Length 31.1 in
Width 4.6 in
Height 3.3 in
Color Yellow


  1. What is the 3M™ Hookit™ Marine Fairing Board, 83978 used for?

    The 3M™ Hookit™ Marine Fairing Board, 83978 is a flexible polyester board which can be used for leveling high spots and shaping of fairing compound.

  2. What are the dimensions of this product?

    The dimensions of the product are clearly mentioned in the name itself. It is Flexible, with a size of 4 1/2 in x 30 in.

  3. Can you tell me how many items I will get per purchase?

    Absolutely! Each case contains one unit of the fairing board.

For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.

The 3M™ Hookit™ Flexible Marine Fairing Board is a must-have tool for professional-grade marine fairing. This lightweight board is designed to make sanding work easier and more consistent. Its flexible facing conforms to the subtle curves of your boat or personal watercraft, ensuring that you get the job done right the first time.

The board measures 30 inches long and 4.5 inches wide, making it suitable for a wide range of boats and personal watercraft. Its double-handle design allows for a secure grip, while the 3M™ Hookit™ attachment makes it easy to apply and remove abrasive rolls and sheets.

The nylon loops on the facing side of the board instantly grip the J-shaped hooks on 3M™ Hookit™ abrasive rolls and sheets, making it fast and easy to apply them to the board. The sheets remove just as quickly, making it easy to change and re-use them.

  • Designed for professional-grade marine fairing
  • Flexible facing conforms to subtle curves
  • Measures 30 inches long and 4.5 inches wide
  • Double-handle design for a secure grip
  • 3M™ Hookit™ attachment for easy application and removal of abrasive rolls and sheets
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