Ka boiphihlelo ba lilemo tsa tlhahiso ea likhoele tsa thepa le li-ratchets , Lishenflex e ka fana ka mefuta e mengata ea likhoele tsa thepa le . likhoele tsa thepa le li-ratchets li ka kopana le lits'ebetso tse ngata, haeba u li hloka, ka kopo fumana tšebeletso ea rona e nakong ea marang-rang mabapi le likhoele tsa thepa le li-ratchets . Ho phaella lethathamong la lihlahisoa tse ka tlase, u ka boela ua iketsetsa marapo a hau a ikhethang a thepa le li-ratchets ho latela litlhoko tsa hau tse khethehileng.