OS-NBR-2-5/8×3-3/8×3/8
OS-NBR-3×3-3/4×7/16
OS-NBR-3×4×7/16
OS-NBR-3-1/4×4-1/4×7/16
OS-NBR-3-1/4×4-1/2×7/16
OS-NBR-3-3/8×4-3/8×7/16
OS-NBR-3-7/8×5-1/4×7/16
OS-NBR-4×5×7/16
OS-NBR-4×5-3/8×1/2
OS-NBR-4-1/2X5-1/2X1/2