Fit with 38 mm (1-1/2”) Roller Shades Clutch2. Good for Engineer Project.2. Power Saving: The Internal Spring and Gear System Save 30% of Power When Pulling a Shade4. You will feel lighter and smoother when pulling chain.
Fit with 38 mm (1-1/2”) Roller Shades Clutch2. Good for Engineer Project.2. Power Saving: The Internal Spring and Gear System Save 30% of Power When Pulling a Shade4. You will feel lighter and smoother when pulling chain.