| Name | Type | WPI |
| #1 - Super Fine | Fingering, Lace, Sock | 18+ |
| #2 - Fine | Sport, Baby | 16 |
| #3 - Light | Lt. Worsted, DK | 14 |
| #4 - Medium | Worsted, Afghan, Aran | 12 |
| #5 - Bulky | Chunky, Craft, Rug | 10 |
| #6 - Super Bulky | Bulky, Roving | 8 or less |
Standard Yarn Weight System