Rockler Woodworking and Hardware has added two new sizes, 6" x 8" and 6" x 13" to their I-Semble™ Shelf Blocks, a component designed to help DIYers design and build custom furniture using common household tools. The I-Semble Shelf Blocks have a black powder coat finish which can be painted to match decor and are designed so multiple sizes can be used in the same furniture piece. Mounting screws to install the I-Semble Shelf Blocks are included in the package. They are sold in packs of two, with the 6"x8" Shelf Blocks (item 49157) priced at $16.99 per pack and the 6" x 13" Shelf Blocks (item 48832) priced at $18.99 per pack.