規格(Specification):

直徑1=21mm、直徑2=30mm、H=33mm(4分低腳，5分低腳)、46mm(5分高腳)

Diameter 1=21mm, Diameter 2=30mm, H=33mm(12mm low leg, 15mm low leg), 46mm(15mm high leg)

耐磨性佳、抗水膨脹、防滑。

Nice wear, water resistant expansion, and non-slip.

可與金屬黏著，耐金屬腐蛀 (熱脹冷縮，不會脫落)

It can adhere to metal, corrosion resistant metal. (hot rising and shrinking without shedding) 

5分套管另可適用雨傘

It's suitable to use with umbrella for 15mm casing pipe.