This is the 6F Splined Servo Horn F Small X Shaped. FEATURES: Replaces damaged or missing servo horns used on a variety of Futaba micro servos including the S3102 (FUTM0034), S3101, S133, S33 and S5102. This horn will fit any current standard size output spline, but a longer screw will be required for use with larger servos. INCLUDES: One Small X-Shaped F Servo Horn One 2.5 x 5mm self tapping Servo Horn Screw SPECS: Diameter tip to tip: 1" (25mm) REQUIRES: One phillips head screwdriver to mount horn to servo. COMMENTS: Not for use with Hitec servos JXS 6/18/00 ir/jl