The other style is similar to a fish hook called an Open-End Cable Stitch Holder
One style is a straight needle with a hump in the middle of it
Description
Susan Bates Cable Stitch Holders And Handi Tool. These cable stitch holders feature the same precision taper and ball point of the knitting needle. One style is a straight needle with a 'hump' in the middle of it. The other style is similar to a fish hook