Octagon door handles are just made to go with Art Deco style furniture. The 2 part octagon handle, above LH, is probably the most practical for robe doors, which allows them to fit a pair of side by side doors. The smaller 1 piece octagon door handles are more specialised in their use. They can be made in a wide range of materials & finishes & sizes, as made to order. The wardrobe design below shows these style of handles can pick up other design elements in a piece (the octagon shaped door panels).