An assortment of clamping knobs from Hillman. These knobs are ideal for moderate-to-heavy torque applications. They are best used wherever a quick hand adjustment is needed. The large clamping knobs included in this assortment range in diameter from 7/8" thru 1-3/4" and are constructed from high-quality materials which offer a high resistance to corrosion. Full assortments of #55394 contain nine (9) refills comprised of Hillman item numbers #55395 - #55403.