Specifications:
1) KP-HJB50: 2.5"
2) KP-HJB90: 5"
3) Welded to the chassis.
Outer packing: woo

Specifications:1) KP-HJB50: 2.5"2) KP-HJB90: 5"3) Welded to the chassis.Outer packing: wooden box