MATRICE 600-PART57-Airframe Arm Fastener SKU CP.SB.000305 by Dji Save Liquid error (product-badge line 32): -Infinity% $62.00 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Located on both ends of the carbon tubes, used to tighten screws. Must be replaced when replacing airframe arms.