RIDERACE Bicycle Chain Link Pliers Mini MTB Bike Quick Removal Install Plier Cycling Chain Buckle Open Close Clamp Repair Tools

The reviewer discusses the RIDERACE master link tool as one of their favorite AliExpress items. They state it is used for dealing with a broken chain by using master links, and it also functions as a tire lever. They praise its construction, value, and functionality for quick chain repairs.