Rotorworkz "Stick Bling" knobs are designed for Futaba radios. It fits perfectly on the gimble thread on Futaba radios. It is designed for both pinch and thumb flyers. Pinch flyers can benifit from knurled and slotted sides with better grip and better control during long flights. Thumb flyers can benifit from ring groves which do not have sharp edges like stock ones. These ring groves will massage your thumb nerves and make you feel much more comfortable during long flights. Features: - Designed for both pinch and thumb flyers - Ergonomics design, comfortable and stylish - Available with different anodizing colors - Adjustable height with stainless steel set screws Specifications: - Size: 9/16" or 15mm - Quantity: 2pcs - Color: Blue - Stainless steel set screws M3x3: 2pcs