产品规格︰ 1-1/2" M X 1-1/2" M
2" M X 1-1/2" M
2" M X 2" M
2-1/2" M X 2" M
2-1/2" M X 2-1/2" M
3" M X 2" M
3" M X 2-1/2" M
3 " M X 3" M
4" M X 3" M
4" M X4" M