1.Explore the skies with the Fi-135, a top-tier FPV RC racing drone designed for and reliability 2.This drone frame kit is specifically engineered to be compatible with the for O4 Air Unit and a variety of motors including 1204, 1206, 1303, 1306, and 1404, ensuring versatile setup options and high adaptability 3.Featuring a robust 3-inch propeller frame, the Fi-135 is built for speed and agility, making it perfect for racing enthusiasts 4.Enhanced with ELRS GPS technology, it offers superior navigation and tracking capabilities, ensuring a safe and enjoyable flying experience Model: Fi-135-O4 Wheelbase: 135MM Bottom thickness: 3MM Upper plate thickness: 2MM Side plate thickness: 1.5MM Aluminum column height: 24MM Flight control hole spacing: 25.5x25.5MM/ 26.5x26.5MM/20x20MM Motor hole spacing: 9x9MM/12x12MM Suitable propeller: 3 inches/75MM GPS compartment size: 17x12.5x5mm (BE122/BZ122) Supported camera: 14MM width Note: This product is a pure rack/frame. It does not contain any electronic equipment, tools, or screws used to install electronic equipment (each player has different installation methods and equipment, and the length of screws used is also different) Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: black Material: Carbon fiber Package Contents: 1 x Propeller Frame Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.