Product Description:

Material: Stainless steel
Aluminum alloy
Metal frame
Metal chrome
Metal carbon

Size: 16(410 mm), 17(430 mm), 18(450 mm), 19(480 mm), 20(510 mm),
21(530 mm), 22(550 mm), 24(610 mm), 26(650 mm), 28(710 mm)

Patents: USA, China, Germany

Characteristics: 1. Slient and judder free operation
2. Easy to install