BF: bulk B1025 - single B25
#4: single B986 - bulk B1986
#8: bulk B1154 - single B154
#12: single B877 - bulk B2133
#16: bulk B1307 - single B307
#32: single B459 - bulk B1459
1/8"R: bulk B1564 - single B564
1/16"R: single B702 - bulk B1702