Whiteside Keyhole Bit 1/2 in. SH x 1/2 in. LD x 5/16 in. SD x 7/16 in. CL is a precision-crafted router bit designed for creating hidden t-slots in the backs of picture frames, small shelves, and other wall decorations, allowing them to be easily hung. This bit features a single flute and is carbide tipped for durability and clean cuts. Manufactured by Whiteside Machine Company in Claremont, North Carolina, it reliable performance with specifications including a 1/2 inch shank size, 1/2 inch large diameter, 5/16 inch small diameter, and 7/16 inch cutting length, with an overall length of 2-1/8 inches. This tool is i for woodworking projects that require a discreet hanging solution. Model Number: 3053