Kwikset 660 Single Cylinder Deadbolt featuring SmartKey Security in Polished Brass

Easy to install, easier to replace the keys. Nice knowing they’re more secure than the average deadbolt. The kit comes with a pair of 2 keys and the piece needed to rekey it, as well as the deadbolts and screws, etc. All super easy to put together. The only potential downside is the outside lock mechanism might be a bit wider than the standard deadlock hole, or that could just be our door. Either way lock and everything still works well with it.

I needed a US style deadbolt for my door so I ordered this lock from the Lock Door seller for 893 rupees which is cheaper than what it costs in US which is typically from 12-15$ for the same one. Other sellers have priced it much higher around 3000-4000 rupees which would be the actual cost if you import this lock from amazon.com. As I expected the lock was a replica as I have seen the original one which I bought in USA. The quality is poor but the lock does the job and is not flimsy. I have installed it on my door just like a regular USA deadbolt and it works fine for a secondary lock. I would not advise to use this as the only lock on your main door.

جودة ممتازة

15年前にアメリカのHome Depotで購入したドアハンドルのDeadboltが壊れ、外から施錠・解錠が出来なくなり途方に暮れていたところ、この商品を発見し故障翌日には修理が完了し、最短の期間で外出できるようになりました。 この商品の良いところは、付属のSMARTKEY toolを使うことで これまで使ってきた鍵がそのまま利用でき、家族用のスペアキーを作り直す手間と費用を不要にできます。鍵のメーカーは異なってもアメリカの通常の鍵（ディンプルキーはダメ）なら互換性があるようです。このようなアメリカ製品の合理的なところはとても良いですね！

Needed to replace an existing lock that is > 20 years old. Easy 10 minutes swap. Fortunately all holes sizes and alignment are the same. Instructions are very clear and straight forward. Would buy again.