Shop › Arri Stirrup Lock Knob (1) for D5, FL1k, SL2k Image 1 of 1 Arri Stirrup Lock Knob (1) for D5, FL1k, SL2k $5.24 Part No: L4.87764.I Arri Stirrup Lock Knob (1) for D5, FL1k, SL2k Stirrup Lock Knob for Arri D5 575 HMI, FL 1k and the SL2k. If you need many of these knobs, they come in discounted packs of 20 which we also sell! Add To Cart Added! Part No: L4.87764.I Arri Stirrup Lock Knob (1) for D5, FL1k, SL2k Stirrup Lock Knob for Arri D5 575 HMI, FL 1k and the SL2k. If you need many of these knobs, they come in discounted packs of 20 which we also sell! You Might Also Like Quick View Arri Stand Lock Off Knob (1) for Arri 150 Fresnel Quick View ARRI UV Protection Glass for M40 HMI Light Quick View Arri M18/AS18 UV Glass Upgrade Kit Quick View Arri Glass Only for AS60 - Spot Quick View Arri Internal Cover for 150w Fresnel