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This ultra-durable and super-reliable Birzman bottom bracket socket tool is designed for use on Shimano Cartridge bottom brackets or other similar 20-notch 31.6mm-diameter models making installation and removal easy and hassle-free. Constructed from strong and corrosion-resistant alloy steel this essential maintenance tool installs and removes cartridge bottom brackets with precision.
Specification
- Functions: ½" Dr.
- Material: Alloy steel.
| Order Value | Service | Estimated Delivery | Cost |
|---|---|---|---|
| Under £39.99 | Royal Mail Tracked | 2–3 working days from dispatch | £4.99 |
| £39.99 and over | Royal Mail Tracked | 2–3 working days from dispatch | FREE |
| Any order — Express | Royal Mail Tracked 24hr / Parcel Force 24hr | Next working day from dispatch | £6.99 |
| Bikes | Parcel Force 48hr Signed For | 2 working days from dispatch | FREE |
Delivery times shown are from dispatch, not from the point of ordering. As we source products from a range of suppliers, lead times can vary — please check the product page, your cart, or your order confirmation for the most accurate estimate for this item.
Some remote UK postcodes (Highlands, Islands) may carry a courier surcharge on larger orders — we will always contact you before applying any additional charge.
Questions? Email sales@cyclestore.co.uk with your order number.

