Make blocking a breeze with Knit Blockers by Knitter's Pride. Perfect for working on straight edges like sweaters, shawls, scarves and swatches. Anchor holes in each blocker allow the attachment of string or cord to help maintain consistent tension. Package of 20 includes 8 pieces having 4 pins and 12 pieces having 8 pins. Can be used with Lace Blocking Mats and Knitters Block kit.