Manufacturer Boye Manufacturer part number 4240166 GTIN 192887659904 Availability Boye Circular Interlocking Blocking Boards 4/Pkg-12"X12" CIRCLE 4/P-BOYE BLOCKING BOARD PREORDER Old price: $25.99 Price: $18.22 Qty: Add to cart Add to compare list Add to Wishes-N-Wants View Once you have completed your knit or crochet project, you will want to straighten edges and ensure your project lies flat. The Boye Interlocking Blocking Boards makes blocking your next crochet or knitting project a breeze. The easy-to-use grid lines make it easier to measure and ensure you are keeping a straight line. This package contains four Boye Circular Interlocking Blocking Boards. Imported.