Saddler’s harness needles are specialized sewing needles with blunt tips and strong eyelets. Since leather can be a thick, and tough material, these needles help guide thread through without marking up the leather, and while being sturdy enough to hold up.
Common varieties of needles might also break at the eye when used with thicker threads and through tougher materials. The eye is a thinner part of the metal, and susceptible to breakage. Saddler’s harness needed are stronger all around, including at the eyelets.
Often used for saddlery, they can also be used for bag making, shoe making, and any leather work that requires sewing with thick thread through thick material.