2 10X12,DBL ENDED RING SPANNER OFFSET
2 10X13,DBL ENDED RING SPANNER OFFSET
2 11X13,DBL ENDED RING SPANNER OFFSET
2 12X13,DBL ENDED RING SPANNER OFFSET
2 12X14,DBL ENDED RING SPANNER OFFSET
2 13X14,DBL ENDED RING SPANNER OFFSET
2 13X15,DBL ENDED RING SPANNER OFFSET
2 13X17,DBL ENDED RING SPANNER OFFSET