With a rotating metal ball that acts by rolling on the flank. Its action is softer and without risks, contrary to a fixed rod which acts by pricking and can "mark" the horse.
rubber-coated stainless steel riding spur Feeling Prince de Galles
stainless steel riding spur + ball woman HFI
stainless steel riding spur Harry's Horse Schultheiss
Stainless steel snaffle bit for horses Feeling
rubber-covered riding spur with pom-pom Premier Equine
riding spur with notches HFI
