Accessorize your Schacht hand or electric double ended bobbin winder with these lace tips. Lace tips are concave, allowing you to wind tapestry bobbins and lace bobbins. For more about that see this blog post.
This is just the tip kit, not the whole winder. The kit comes with an aluminum tip, set screw, and allen wrench and a black rubbery tip with bearing inside, metal shaft, and spring.