Sierra Copa Bi-Metal Venturo GTR-57 Giro Triplex Ø 57mm
Sierra Copa Bi-Metal Venturo GTR-59 Giro Triplex Ø 59mm
Sierra Copa Bi-Metal Venturo GTR-67 Giro Triplex Ø 67mm
Sierra Copa Bi-Metal Venturo GTR-73 Giro Triplex Ø 73mm
Sierra Copa Bi-Metal Venturo GTR-76 Giro Triplex Ø 76mm