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Strong Foldable Security Bike Lock | Kalsten

Regular price $67.99 $136.00 SAVE $68.01 (50% OFF) Sale price
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FEATURES

  • Small and delicate --- This is a foldable lock with 26 joints and 3 keys. It is smaller than your smartphone. You can put it in your pocket. It supports many different bikes such as mountain bikes. It can lock multiple bikes at the same time. When exercising outdoors with your friends, you only bring one foldable lock to lock your bike and your friend's bike together.

  • Strong and durable material --- The lock is made of zinc alloy; the thickness of each alloy piece is 1 cm. The bike lock is solid, anti-corrosion, anti-saw which prevents theft and violence. This lock can clip onto the seat tube. It is difficult to cut and break. And it prevents hacksaw, smash, pry.

  • Water-resistant and anti-corrosion --- The lock is coated with a rubber lacquer that can make it water-resistant and anti-corrosion. It can protect it from water, rust, corrosion. This significantly contributes to extending the life of the lock. There is no strict maintenance, just keep it anywhere.

  • Simple and safe installation --- This lock can be directly clipped onto the seat tube with a base holder. The adjustable diameter fits all sizes of seat tubes and is easy to use. The portable design ensures that the foldable lock is compact and well-clipped onto the seat tube.

Unlocking Method

  1. insert the key into the lock cylinder
  2. turn the key 180° in the direction of the lock and then the cylinder pops out a bit
  3. turn the key 180° in the anti-lock direction and remove the key
  4. remove the orange section and fully stretch out the lock
  5. put the orange section in the hole at the bottom of the cylinder
  6. push the cylinder back to lock

SPECS

  • Length: 85cm (unfolded)
  • Folded size: 4*5.2 (H) cm
  • Net weight: approx. 570g
  • Material: zinc alloy + alloy steel + ABS plastic + PA6 plastic + 59 copper
  • Number of chain pieces: 26 pieces, size: 16 mm*45 mm, using local cementation heat treatment technology, outer hardness HRC45, inner HRC10-HRC25
  • Locking socket: zinc alloy + alloy steel (heat treatment cementation hardness above HRC45)
  • Key: PA6 plastic + 59 copper

PACKAGE INCLUDES

  • 1 * LOCK
  • 1 * BASE
  • 3 * KEYS

    Free standard shipping on all orders. No minimum purchase.

    • Ships to: United States
    • Processing: 1–4 business days (Mon–Fri)
    • Transit: 5–10 business days
    • Total delivery time: 6–14 business days
    • Order cut-off: 5:00 PM PST

    You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.

    See our full Shipping Policy.

    You have 14 days from delivery to request a return.

    • Email support@open.shop with your order number to start a return.
    • Items must be unused, complete, and in their original packaging.
    • Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
    • Damaged, defective or incorrect items: we cover all return and replacement costs.
    • No restocking fees.
    • Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
    • Refunds are issued within 7 business days of inspection.

    See our full Return Policy.

    Questions about your order or our products? We're happy to help.

    Open
    Hooizolder 214
    Drachten Friesland 9205CD
    Netherlands

    Email: support@open.shop

    Customer Service:
    Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)

    We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.

    For quick answers, visit our FAQ page or use our Contact Form.