#4: single B43 - bulk B1043
#8: bulk B1203 - single B203
#12: single B953 - bulk B1953
#16: bulk B1407 - single B407
#32: bulk B3819 - single B3818
1/8"R: single B583 - bulk B1583
1/16"R: bulk B1809 - single B809
#8: bulk B1203 - single B203
#12: single B953 - bulk B1953
#16: bulk B1407 - single B407
#32: bulk B3819 - single B3818
1/8"R: single B583 - bulk B1583
1/16"R: bulk B1809 - single B809