IDEAL FOR WOOLLY NYLON AND OTHER DECORATIVE THREADS. KEEPS SERGER CONE THREADS TANGLE AND LINT FREE. SLIPS OVER THE TOP OF EACH CONE. 205020109A SL500 SL660 SL850 SL880 DBL34-60 BL80 BL90 BLSE200 BLSE300 BL3-318 BL3-407 BL3-408 BL415 BL3-416 BL3-417 BL3-418 BL3-426 BL4-428 BL4-428D BL428K BL4-428NS BL4-436 BL4-436DF BL3-437 BL3-437D BL4-605 EA605 BL4-625 BL4-714 BL4-728 BL4-728D BL4-736 BL4-736D BL4-738 BL4-738D BL4-738NS BL4-838D BL3200 BL5180 BL5180NS BL5260 BL5260D BL5280E BL5280ENS BL5280ED BL5360ED BL5380ED BLE1AT BLE1 BLE1DX BLE1LX BLE1SX BLCS BLE8 BLE3ATW