1.poison-free and odor-free
2.burliness &durable
3.convenient and flexible

1.density :350 kgs/m3

2.white part material : ABS

3.yellow part material :polyurethane

4.high:7cm          max diameter:11.2cm

5.hexagon socket head cap screw (length): 3.5cm

6.use : An important parts of  knee accept cavity . Play a connection role .