Feature:
1. Anti‑falling component design properly solves the problem that the sleeve is not fixed and easy to fall off when disassembling force. With it, novices can easily disassemble the bottom bracket. The spring acts as a buffer when the sleeve is screwed out of the bottom bracket to avoid wear.
2. One‑piece structure, accurate and standard 20‑tooth design, no burrs, smooth hand feeling, perfectly fits the bicycle bottom bracket key. Precision and high compatibility, the square hole/spline bottom shaft is suitable for 20 keyways (16 keyways downward compatible).
3. Made of high‑quality carbon steel, after electrophoresis process, anti‑oxidation, with strong toughness and strength, square hole/spline bottom bracket can be used, easy to lock and force, suitable for 8mm / 0.3in hole bottom shaft.
4. Enlarge the occlusal area and stabilize the tooth profile; the sleeve teeth of the bottom bracket are tightly fitted with the keyway of the bottom bracket, and the force is uniform and continuous teeth without damaging the keyway.
5. The contact area of most sockets and wrenches on the market is too small and easy to slip. The upgraded version of the socket has an occlusal contact surface of 18mm / 0.7in, which has even force and is labor‑saving.
6. High-carbon tool steel, thickened curved teeth, not easy to damage, beneficial to protect the bottom bracket; it needs to be used with a 24mm spanner or a 1/2-inch bristle spanner.
Specification:
Item Type: Bike Accessory
Material: High Carbon Steel + Iron
Product Size:
Anti-Dropping Component Length: Approx. 11cm / 4.3in
Sleeve Length: Approx. 5.2cm / 2in
Weight: Approx. 238g / 8.4oz
Package List:
1 x Anti-Dropping Component
1 x Bottom Bracket Sleeve
How To Use
1. Prepare the sleeve and anti‑dropping tools;
2. Clamp the sleeve on the bottom bracket;
3. Pass the anti‑dropping tool through the sleeve, screw it into the middle shaft, and tighten it until it does not shake; clockwise on one side of the chain ring is loose; the side of the crank is loosened counterclockwise;
4. After locking the sleeve, use an adjustable wrench to turn the sleeve.
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