Profile Design Universal Gap Cap fits 1" 1-1/8" steerer tubes Aluminum Top Cap BLK

Profile Design Universal Gap Cap: fits 1" or 1-1/8" steerer tubes Aluminum Top Cap Black. Gap Cap is a threadless plug that eliminates the need for a star-fangled nut; works with Carbon Aluminum and Steel steerers.

Fits steerer Inner Diameter of 19.6 to 28 mm