Sliding backband saddles have shaft tug loops connected to one another inside the saddle with a strap which allows them to shift side to side on uneven terrain or in sharp turns to help maintain balance and even weight distribution. THESE SLIDER LOCKS ALLOW YOU TO CHOOSE WHEN TO USE THE SLIDING OPTION. Two sizes – to fit 3/4″ strap or 1″ strap Mini ones 3/4″ are shown – These are sold as a pair.