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
2 14X15,DBL ENDED RING SPANNER OFFSET
2 14X17,DBL ENDED RING SPANNER OFFSET
2 16X17,DBL ENDED RING SPANNER OFFSET