sia's 7990 series siasponge Combi-Block is made from hard polyurethane foam with aluminum oxide and a flexible elastic binder.
Surfaces can be treated quickly and easily with the 7990 sponge block. This handy sanding 69mm x 98mm (2-3/4" x 3-5/8") block has grit on four sides and achieves excellent results on wood, plastics, paints, lacquers and on composites due to its high edge stability.
Advantages of sia 7990 siasponge
- Colour coded for easy identification
- Low clogging
- Can be used wet or dry
- Coated on all four sides, ideal for use inside rebates and on flat surfaces
- High edge stability for crisp sanding results
Applications of sia 7990 siasponge
- Keying of wood, metal and plastic prior to application of paint
- Fine sanding primer filler
- Intermediate sanding of varnishes on surfaces and curves
- Keying rebates and slight curves
Medium and fine pads are sold individually. Super-fine pads are sold in packages of 10.
We offer free standard ground shipping within Canada on orders over $149 (excluding taxes and gift cards) with some exceptions.
We are proud to offer same-day shipping on all in-stock orders that have been paid for* before 12 PM Pacific time Monday to Friday.
*Please see our Order Fulfillment Policies for more details.
We want you to be happy with our products. If you are not completely satisfied with your purchase, return it to us within 30 days and we will issue a refund for the purchase price.*
It is often possible that we can resolve issues you may have quickly and simply. Feel free to contact us with your questions or concerns.
If a return is necessary, please contact us for return authorization and shipping arrangements.
*Please see our Return & Warranty page for more details.
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