A special hook makes these cllips tailored for Icicle lights. You've gone to all of the trouble selecting the perfect icicle lights, why risk a sloppy installation.
Do what the professionals do and get that incredibly straight edge to your icicle light installation by investing in what the pros use.
Buy a full case so that you'll never have to worry about purchasing these clips again (perhaps a neighbor or two needs some of these as well).