Specifications:

FT300 * 1000 (inner hole 30)

FT300 * 600 (inner hole 85/110/125)

FT500 * 700 (inner hole 160/180)

FT500 * 800 (inner hole 200/220/250)

FT550 * 900 (inner hole 280)

FT600 * 1000 (inner hole 50)

FT700 * 800 (inner hole 320/335/360)

FT800 * 1100 (inner hole 400/450)

FT400 * 600 (inner hole 18)

FT500 * 1000 (inner hole 64)

FT600 * 700 (inner hole 100)

FT700 * 900 (inner hole 275/300/315)

FT1200 * 1200 (inner hole 550)