BORDEN 2-Hole Connection (RD-3 45° Series Non-Optic)
Model: RD-345 B2
MIDWEST 4-Hole Connection(RD-3 45° Series Non-Optic)
Model: RD-345 M4
MIDWEST 4-Hole (Non-Optic)
Model: RD-3S M4 / RD-3M M4
BORDEN 2-Hole Connection (Non-Optic)
Model: RD-3S B2 / RD-3M B2