REVERSIBLE CAM LIFT HINGE, 10" WIDE OD STRAP HAS A PLASTIC CAM RISE STEM IN IT WHICH GOES INTO THE FLANGE., NUMBER "1245" IS CAST ON STRAP & FLANGE. 1-3/8" OFFSET TO REVERSE REMOVE CAP AND PUSH OUT CAM, REPLACE CAM ON OTHER SIDE OF STRAP AND REPLACE CAP. Kason -1245-48112450000481245-0000481245000048