Check the listing for details. Thread Magic Combo Accessory. Condition: New. Listed at 13.99 USD. Strengthen your thread and prevent tangling and fraying with hypoallergenic, acid-free thread conditioner. Designed for smoother stitching, this specialty thread conditioner eliminates static for 400% less thread drag—and less hand fatigue! The thread conditioner leaves no residue on your project and is safe for all threads, fabrics, and machines. This special combo pack includes a round tub of thread conditioner and an extra cube of conditioner that attaches directly onto your sewing machine to condition thread as you stitch. • Acid-free thread conditioner strengthens thread, prevents tangling and fraying, and eliminates static. • Safe for all threads, fabrics, and machines. Won’t leave a residue. • This two-piece set includes one round tub of hypoallergenic thread conditioner plus a cube attachment for your sewing machine.