Check the listing for details. Agilent/HP 53131A/53132A/53181 High Stability Time Base Compatible. Condition: New – Open box. Listed at 119.99 USD. This is a High Stability Time Base For Agilent/HP 53131A/53132A/53181A Frequency Counter.Compatible for US OPTION.all the items has been tested,very good performance. Al All of items will be sent with tracking number· We will ship the item according to the address on your eBay profile· No combine shipping discount and no local pickup service. Please make sure that you agree with our terms before bidding. · · ·We accept PayPal payment. · Payment must be fulfilled within 7 days after auction's ended.· ·For DOA (Defective on Arrival) item, please notify us for shipping instructions.·Then, please send it back within 7 days upon date of receipt. ·Return shipping costs will be at buyer's expenses. · We only accept the returned goods with full packaging materials.· When we receive your returned item, we will investigate the situation and consider to offer replacement or refund according to the situation.· We are professional online trader with excellent customer services.· Our team is working everyday to communicate with our customers and to bring the latest products for your selection.