2B CONCEALED HINGE BORING BIT 35MM Sealants placing it through a pre-drilled

placing it through a pre-drilled hole in the materials to be joined

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also known as self-closing hinges

2B CONCEALED HINGE BORING BIT 35MM Sealants placing it through a pre-drilledA 2B concealed hinge boring bit, typically 35mm in diameter, is a specialized drill bit used to create the circular recess (or "cup") in cabinet doors where concealed hinges are mounted. These bits are designed to work with a drill press or hand drill and are crucial for accurately installing concealed hinges, which are common in modern cabinet construction. Some online retailers sell these bits.