Semroc Centering Ring Set Plywood Estes Super Big Bertha 9719 SEM-CR-ES-9719P
1/8" Light Plywood
Laser cut for precision
ID: 1.21"(29mm)
OD: 2.558"
A replacement for the Estes Super Big Bertha kit 9719 that includes accommodation for the thru the wall tab in the fins
Made in the USA