Home / Horse Tack / Rollers, Surcingles and Training Aids / Rubber insert for side reins Rubber insert for side reins €12.92 €10.68 (ex. VAT) Colour/color: Black/Negro Red/rojo Add to your Wish List Information Replacement rubber insert for side reins. In a choice of black or red. Priced per pair. The use of rubber inserts or donuts into side reins is designed to add a little 'give' into the rein so helping the more sensitive horse. Specifications Product Code: 2104915 Weight: 0.4kg