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Professional-grade Original Lishi M4/MS4R 2-in-1 pick and decoder for Master Lock padlocks and door locks. Precision-engineered stainless steel with anti-glare finish. Features depths 0-7 and 5 tool spaces — covers both residential and commercial Master Lock applications. Original manufacturer quality — trusted by locksmiths worldwide.

 

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🔧 Technical Specifications

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Keyway M4 / MS4R

Material Stainless Steel / Anti-Glare Stainless Steel

Depths 0 – 7

Tool Spaces 1 – 5

SKU Lishi-T210

Product ID M4/MS4R-AG

Lock Type Master Lock Padlocks / Door Locks

Quality Factory Original

Warranty 1 Year Free Return

 

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✅ Compatibility Checklist

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✅ Master Lock padlocks with M4 keyway

✅ Master Lock padlocks with MS4R keyway

✅ Residential Master Lock applications

✅ Commercial Master Lock applications

✅ M4 / MS4R keyway door locks

 

⚠️ Verify your lock uses the M4 or MS4R keyway before ordering. Depth range 0-7 is specific to Master Lock tumbler system. This tool is for professional locksmith use only.

 

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🔑 How to Use

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1. Identify the M4 or MS4R keyway on your Master Lock

2. Insert the Lishi 2-in-1 tool with correct orientation

3. Use pick mode to set pins to shear line

4. Switch to decoder mode to read depth settings (0-7)

5. Record depths and cut replacement key

 

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📦 What's Included

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• Original Lishi 2-in-1 Pick and Decoder M4 / MS4R

• Original Factory Packaging

 

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🚚 Shipping & Warranty

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✅ Free shipping on orders over $100

✅ Ships within 1-3 business days

✅ 1-Year Free Return Policy

✅ In Stock — Ready to Ship

 

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❓ Frequently Asked Questions

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Q: What is the difference between M4 and MS4R?

A: M4 and MS4R are related keyways used in different Master Lock products. Both are supported by this 2-in-1 tool. The MS4R may refer to a right-handed variant or specific application.

 

Q: Does this work on all Master Lock padlocks?

A: This tool is designed for locks using the M4 or MS4R keyway. Master Lock has multiple keyway families — verify your lock's keyway code before ordering.

 

Q: What does depth 0-7 mean?

A: Master Lock uses a 0-7 depth system (8 positions). Most other keyways use depths 1-5 or 1-6. The M4/MS4R tool is calibrated for this specific depth scale.

 

Q: What warranty does this have?

A: Backed by a 1-year free return warranty from Locksmith Mall.

 

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📌 Related Products

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SKU: Lishi-T210 | Keyway: M4 / MS4R | $39

Type: Master Lock Padlocks / Door Locks | Depths 0-7

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