Attach your shock cord and recovery system to a balsa nose cone, nose block, or balsa adapter with these screw eyes. For use with BT5, BT20, BT50, BT55 & BT56 size balsa nose cones and bulkheads. Direct replacement for ASP, Estes, FlisKits, Semroc and other similarly sized model rockets. Grid spacing in photo is 1/2" |