BTB Blade Depth Controller Arm for Reverse Blades
Long end for Blades: WK24ZR-S, WK24ZVR-S, WK24R-S.
Short end for Blades: WK4ZR-S, WK4ZVR-S, WK4R-S.
IMPORTANT! While cutting against the pinchweld (not against the glass), use the WK11CW control arm underneath all ORANGE and BLUE reverse blades, to provide support to reciprocating blade and avoid flapping.