TMC Ceramic Bobbin Evo Bobbin After decades as the first and best ceramic bobbins on the market, Tiemco has applied improved designs and materials to make a great bobbin even better. The EVO has more rigid arms and upgraded hubs that reduce start-up inertia and enhance smooth rotation. These new features, combined with the highest grade ceramic tubes on the market, result less thread breakage and the simplest and easiest operation available. The first and best ceramic bobbins on the market. Available in Standard tube (white) and Heavy Duty (black). Made in Japan