Features:
* Color: Black
* Material: Spring Steel+ ABS+ Rubber
Specifications(20kg):
* Total length: about 57cm
* Spring length: 23cm
* Diameter of spring:about 2.5cm
*Length of grip: 9.5cm
* Item weight class: 20KG
* Weight: about 1100g
Specifications(30kg):
* Total length: about 57cm
* Spring length: 24cm
* Diameter of spring:about 3.5cm
*Length of grip: 9.5cm
* Item weight class: 30KG
* Weight: about 1300g
Specifications(40kg):
* Total length: about 61cm
* Spring length: 25.5cm
* Diameter of spring:about 4cm
*Length of grip: 9.5cm
* Item weight class: 40KG