BOIS Diamond Lead Reels Bolt Isolators, 4PK Please log in to see price or purchase this item Quantity discounts available QuantityPrice SKU: DLRBOIS Qty On Cart Features Set of 4 replacement bolt isolators. These are the standard bolt isolators sold on all Diamond Lead Reels. Specifications Number of Pieces4 FeaturesSpecifications Back Set of 4 replacement bolt isolators. These are the standard bolt isolators sold on all Diamond Lead Reels. Back Number of Pieces4