This is a kinesis carbon fork with an alloy steerer. The steerer is 1-1/8” and 20.5cm long. This shows moderate signs of wear. Check pics for condition
160mm 1-1/4" (1.25) Steel Steerer. 40mm of threads on steerer. I am a gear trader, passing along my old gear and the deals I find to you! ~395mm axle to crown. 100mm front axle spacing.