KnitPro Rainbow Knit Blockers - Pack of 20These brilliant blockers have transformed the way we block, making blocking quicker and so much less of a faff, and we use them for all our straight edge projects (sweaters, shawls, scarves etc). Massively reduces the number of pins you need to use and allows you to apply a more consistent tension while blocking a wide area. 20 Blockers in total 8 with 4 pins, 12 with 8 pins. Two different sizes to manage different shapes when blocking