Complete seal kit for the Crosman 1077, Phase II. That is guns made between 11/98 and August 2001. Model 1077 made after August 2001 should take CRS1077 SK3. Model 1077 made after August 1998 but before 11-1-1998 could take this seal kit or CRS1077SK2. You will need to disassemble your gun to determine which. Kit includes CRS106-005, CRS130-032 (Quantity 2), CRS130-034, CRS2-150, and CRS38-128.