... quality and competitive price. 3. different types. TOMA noiseless tubular motor for roller shutterSpecification:1) Dia.: 35mm, 45mm, 59mm, 92mm2 ... twisted off. TOMA limit: non-mandrel structure, high strength, wear-resistant, easy hand operation.2. Normal limit screw rod: ... rod: composes of brass, featuring high accuracy, resistant to wear, antirust, stable limit and long service3. Normal brake: single ...