Amazon.com: MHUI Graphite Tube Hollow Graphite Rod Widely Used in Sintering Molds 5X30mm,The Inner Diameter Can Be Customized,12 * 50mm(4pcs) : Everything Else
Graphite Pipe - BZN Carbon | Graphites
Amazon.com: MHUI Graphite Tube Hollow Graphite Rod Widely Used in Sintering Molds 5X30mm,The Inner Diameter Can Be Customized,6 * 30mm(5pcs) : Everything Else