Check the listing for details. Prema PC-1 Combi Patch Plug with Wire 1/8" Box of 40. Condition: New. Listed at 49.95 USD. Our eBay Store About Us PREMA Combi Repair Units can be used for crown injuries only. Prepare the injury using the appropriate PREMA Carbide Cutter. The PREMA Combi Repair comes with a guide wire, fills and seals the injury and repairs the innerliner all in one step. Manufacturer Part Number: PC-1 FeaturesDesigned to fill the injury channelPrepare the injury using the appropriate Prema carbide cutterCombi repairs can be used for crown injuries onlyCombi patches come with a guide wire for easy installationCombi repairs fill and seal the injury and repairs the innerliner in one easy step We try to describe our items as accurately as possible. Feel free to e-mail us with any questions you may have. E-mails sent in the evening or over the weekend will be answered as quickly as possible the following business day.