Commercial turnbuckle (casting) Size: 6— 24mm -Italy turnbuckle (casting) 6--24mm -Korean turnbuckle (casting) 3/8” — 3/4” -JIS frame turnbuckle, 6— 32mm -Rigging turnbuckle m12— m32 -U. S. type turnbuckle (forged) -DIN1480 Turnbuckle (forged). M6— m30