A lot goes into what kind of beading cord you're going to need for a particular design. Sometimes you need it to stretch. Other times you may want it to be exposed. Will you be doubling-up the thread? Fortunately, once you know what kind of cord you are going to need, you can come here, sort by color, size and type and pull up exactly what you're looking for.
01-0201-45 - TierraCast Pagoda End Cap for 6mm Cord, Antique Silver | Pkg 2
01-0202-27 - TierraCast Pagoda End Cap for 8mm Cord, Antique Brass | 2 Pcs
01-0220-25 - TierraCast Cupola End Cap for 6mm Cord, Bright Gold | Pkg 2
01-0232-61 - TierraCast Capitol End Cap for 10mm Cord, Bright Rhodium | Pkg 2
338A-003_ - Cord Ends, C-Crimp, 1.9 mm (.074 in), Gold Color, 14 pc | Pkg 1
94-6812-27 - TierraCast 4mm Pagoda Cord End Set, Antique Brass | 1 Set