1. Material: Metal, Steel, Copper, Graphite, etc
2. Type: JDB series, JFB series, JQB series, JTW series, JSP series, SF series, FZ series, FD series, etc. 
4. Feature: High density, good load capacity and wear-resistant. 
5. Application: Mostly applied under middle or low speed usage, such as heavy-duty truck, truck roller and idler rollers of excavators, etc. 
6. Packing: Single colour boxes or industrial packing. Then into Carton (around 22kg), last into wooden or steel pallet.