OS-NBR-2-3/4×3-3/4×7/16
OS-NBR-13/16×1-3/8×1/4
OS-NBR-3×3-3/4×3/8
OS-NBR-3×3-3/4×7/16
OS-NBR-3×4×3/8
OS-NBR-3×4×7/16
OS-NBR-3-1/4×4×3/8
OS-NBR-3-1/4×4-1/4×3/8
OS-NBR-3-1/4×4-1/4×7/16