Hobbico TorqMaster 90-180 Jumbo Rubber Insert This is a White, rubber insert for the TorqMaster Starters when using the optional Jumbo Drive Cone This is a White, rubber insert for the TorqMaster Starters when using the optional Jumbo Drive Cone This is a White, rubber insert for the TorqMaster Starters when using the optional Jumbo Drive Cone