The Minnesota Trapline 330 Trap Short Supports 6PK can really speed up the beaver trapper. These are constructed of heavy 5/16" round rod braced with double cross bars for sturdiness. Cross bars lowered for standard or upside-down trap position. The 20" support is for use on dams, crossovers, shallow runs, etc. Features20" Heavy 5/16" round rod braced with double cross barsCross bars lowered for standard or upside-down trap positions