All-2-Mate Goat Insemination Gun - 12" - is a stainless steel 12" insemination gun that operates very much the same as the cattle guns. It's an 'O'- ring style gun designed to be used with a slit sheath. It will work with either a 1/2cc or 1/4cc wick and powder semen straws, and with the 1/2cc standard slit goat sheath, the 1/2cc goat sheath with insert, the apex-style slit sheath, or the 12" Lapropex needle-tipped sheaths.