Manufacturer Boye Manufacturer part number 21081231 GTIN 070659997150 Availability Out of stock Boye Interlocking Blocking Boards 4/Pkg-12"X12" SQU 4/PKG -BOYE BLOCK BOARD 4PC PREORDER Old price: $22.39 Price: $15.69 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 Square Interlocking Blocking Boards. Imported.