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 Stirrup Socket (Metal) w/ Thumbscrew Kit for all 5/8" Quick View Arri Glass Only for 4k PAR - SPOT LENS Quick View ARRI UV Protection Glass for M40 HMI Light Quick View Arri Top Latch for 150w Fresnel Quick View Arri 4-chamber 90 degree Eggcrate for Skpanel S30