Cascade Magnum Super Bulky Wool #4008 Ruby Heather Cascade Magnum Yarn is a Super Bulky 100% Wool yarn in solids, heathers and hand painted shades. Magnum Yarn is 100% Peruvian Wool Yarn at 123 yds in a super thick yarn. Cascade Magnum knits up at lightning speed at 1.5 - 2 sts per inch on a US#15-17 knitting needle. Composition: 100% Peruvian Wool Yardage: 123 yards (250grams) Super Chunky STS: 1.5-2 sts = 1" Recommended Knitting Needle: #15-17