Lishi 1646 2-in-1 ピック＆デコーダー（米国メールボックス S1064A・C8700・C9200／5ピン）
Lishi 1646 2-in-1 ピック＆デコーダー（米国メールボックス S1064A・C8700・C9200／5ピン）
受取状況を読み込めませんでした
Compatibility check
Compatibility check
Confirm the vehicle make, model year, market and lock position, then match the keyway code in the title. Each tool is built for one keyway — two vehicles of the same brand can need different tools.
Support before you order
Support before you order
Not sure which tool fits? Contact us before you order and we will check the listing with you.
Fitment check
Not sure this tool fits your vehicle?
Ask the assistant: it checks this listing against your make, model, year and market, and tells you when it cannot confirm.
US mailbox locks are the bread-and-butter of route work: dozens of identical cluster boxes, one lost key, and a lock that is cheaper to decode than to replace. The 1646 is the 5-pin Lishi 2-in-1 for the left-slot mailbox keyway used on the S1064A, C8700 and C9200 series cam locks.
It picks the wafer stack and reads all five depths in one pass, so you can cut a tenant key on site instead of drilling and swapping the lock.
Which locks this tool fits
- Keyway — 1646 left slot. US cluster-mailbox cam locks including the S1064A, C8700 and C9200 families.
- Cut count — 5. Confirm by counting cuts on the key.
- Handing — left slot. The right-slot version is the 1646R; the two are not interchangeable.
Mailbox banks mix models more often than people expect. Check each lock face rather than trusting the row to be uniform.
What "2-in-1" actually means
Pick and decoder in one body: tension the plug, lift each wafer to the shear line, read the depth as it sets. Five depths and you can cut a key that opens the box and every box keyed alike on the bank.
Decode-then-cut workflow
- Identify the slot side before inserting anything. Left slot means this tool; right slot means the 1646R.
- Tension gently and follow the keyway in.
- Set and read five wafers, front to back, writing each depth down.
- Cut the key with a key machine or factory cutter pliers.
- Test in two boxes on the bank if the bank is keyed alike.
Three mistakes that cost the most
- Buying the right-slot version by accident. The 1646R and 1646 are separate tools for separate locks.
- Over-tensioning small cam locks. They overset easily.
- Skipping the second box test. Worn mailbox locks can accept a marginal key and then fail on the next door.
Frequently asked questions
Does it fit all USPS cluster mailbox locks?
It fits the left-slot 1646 keyway on S1064A, C8700 and C9200 locks. Other mailbox families use different profiles, including the C9100 covered by the 1646R.
Can it decode without picking?
No. The depth is read as each wafer sets on the shear line.
Can I cut a key from the decode?
Yes, with the matching mailbox blank.
Related tools
Add the 1646R for right-slot boxes and the YA4R/Y13 for cabinet and drawer cam locks.
Buying guide & support
Ordering, Shipping and Aftercare
Buying the right tool
Match the keyway code in the title to the vehicle or lock you are working on. The cut number (5-cut, 8-cut, 10-cut) describes the bitting geometry, not tool quality.
Shipping
Orders are dispatched within 48 hours. Delivery typically takes 3–7 business days depending on destination, with tracking provided for every shipment.
Returns
Return unused items in original packaging within 30 days of delivery. Refunds are issued to the original payment method within 3–7 business days of inspection.
The product title states the keyway and the vehicle families it is built for. Because one brand can use several keyways across model years, confirm year, market and lock position before ordering — contact us if you are unsure.
Package contents are listed in the “In the box” section when the supplier provides them. Tools are supplied in the manufacturer’s packaging with the decoding card where applicable.
Yes. We ship worldwide with tracked courier services. Shipping options and costs are shown at checkout once your address is entered.
Keep browsing
Related Tools
Other tools locksmiths buy alongside this one.
