Recommended ATV Tire sizes: 21x9x10, 21x10x12, 22x8x10, 22x9x8, 22x10x8, 22x10x9, 22x10x10, 23x7x10, 23x8x10, 23x8x11, 23x10x10, 22x9x10, 22x9x12, 23x8.5x1223x10.5x12,24x11x8,24x11x9,24x11x10,24x11x12, 24x11.5x10, 24x13x9, 25x10x10, 25x10x12, 25x11x10, 25x11x12, 25x12x9, 25x12x10, 25x11x9, 22x12.5x1...

Swivel Mount for Graph Units - 24 position automatically locking swivel top Lever release top removal mechanism Heavy duty design for larger electronics Supports up to 14 lbs. It Fits most graph units (except Lawrence and Eagle) Ratchet rotates 360 degree.