12-in-1 Residential/Commercial Key Decoder (LOCK MONKEY) - UHS Hardware
12-in-1 Residential/Commercial Key Decoder (LOCK MONKEY) - UHS Hardware

12-in-1 Residential/Commercial Key Decoder (LOCK MONKEY)

Available to Order
NSID: 5306

Please Note: This product has a lead time



  • Model: MNK-MK380
  • Manufacturer: Lock Monkey Tools
  • Made with 1/16″ thick steel to provide extremely high durability
  • Laser cut provides higher tolerances and more accuracy
  • Laser engraved markings will never rub off
  • Slim shape to easily fit in your existing tool kit
  • Dimensions: 2.25″W x 6.5″H
Call 1-800-878-6604 for Bulk / Dealer Pricing!

Replaces Schlage 40-140 Key Gage, pin depressor from M504-310


12 useful tools for residential/commercial locksmithing:

  • Kwikset Key Gauge (KW1/KW10/KW11)
  • Schlage Key Gauge (SC1/SC4/SC7/SC8/SC9/SC10)
  • Yale Key Gauge (Y1,Y2)
  • Arrow Key Gauge (AR1,AR4)
  • Weiser Key Gauge (WR5)
  • Master Key Gauge (M1)
  • Weslock Key Gauge
  • SFIC A2 Key Gauge (Best/Arrow/Falcon Small Format IC Core)
  • Kwikset C-Clip Manipulation Tool (A)
  • Schlage F-Line C-Clip Removal Tool (B)
  • Retaining Pin Depressor (C)
  • Universal C-Clip/E-Clip Removal Tool (D)


Compatible With

Customer Reviews

Based on 7 reviews
D. Mont.
Greate Tool

Great tool and spot on in decoding keys.

One shep off

It seems to be one depth off on all keys a4 is really a5, a 2is really a3. All the other features are awesome.

Kenneth Herrera

Very good

Abdy Mercado
Amazing products

Staff is amazing, extremely helpful products are of great quality and delivery is fast I would recommend anyone to purchase from UHS

Johnathon Mcintire

I checked the accuracy against other key gages and it was just as accurate if not more accurate due to the stair stepping and all the other functions seem to meet up to the same standards and it is decently thick material as well so it should hold up to the test of time the only thing I think could be better is stamping the numbers instead of laser etching or whatever was done but that seems to hold up as well this is a great product at an even better price