A set of tools for attaching sinew backing to a bow. The set consists of a marlinspike and two sinew twisters made from bone or antler. Each has a drilled hole at one end, and it is likely that at one time these tools had been strung together on a thong.

FROM CARD: "BOW TOOLS. 1 SPIKE, 2 TIGHTENERS FOUND 1/1981. MFL. INVENTORIED 1981."