How to Use:
1. Choose the right headset according to the upper and lower inner diameters of the front frame head tube.
2. Coat the inner side of the head tube with grease for easy installation and disassembly, and maintenance while pressing in is more labor‑saving.
3. Assemble in order. It is recommended to press into one bowl first, and then press into the other one after completion, to ensure successful pressing.
4. Tighten the nut clockwise and press it in slowly.

Specification:
Item Type: Bike Headset Bottom Gear
Material: Aluminum Alloy
Weight: Approx. 116g / 4.1oz
Specification: 41.8 x 28.6-52 x 30 or 39.8 (Specification: 1 1/8in + 1 1/2in)
Suitable for: Frame Head Tube with Upper and Lower Inner Diameters of 41.8-52mm / 1.6-2in, Used with Ordinary 28.6mm / 1.1in Straight Tube Front Fork, or Standard 1.5in Tapered Tube Front Fork (You Can Choose the Corresponding Option According To The Matching Front Fork)

Package List:
1 x Bottom Gear
2 x Bearing
1 x Urgent Ring
1 x Bowl Cover
1 x Sunflower Screw Top Cover