Is this a pancake anode? Does it have the top and the bottom anode?

I ordered two not being sure what the configuration was. These are pancake anodes - flat on one side and domed on the other. They apparently come in pairs where a QTY of 1 gets you two anodes connected together with a screw that can be easily separated to expose the flat side. I received two pairs with a QTY of 2.

The listing says this is for a cmr 5, but the picture shows a cmr 3. which is it?

It is a CMR5. It is 5" in diameter and 3/4" thick. I put them on my Bennett trim tabs, replacing the old original factory anodes. Fit perfectly.

Anodes, CMR03, Zinc Rudder & Trim Tab Disc Anode with Stainless Steel Allen Head (0.5 H x 3.75 OD x 0.34 ID) – Marine Boat Sacrificial Anode for Saltwater Corrosion Protection

Product ID: 12921025

Details

Material
Zinc
Head Style
Trim
Item dimensions L x W x H
3.9 x 3.8 x
Exterior Finish
Aluminum Steel
Thread Size
Unthreaded

⚓Zinc alloy for superior saltwater protection

🔩Precision stainless steel Allen head design

🛡️ISO 9001 certified quality assurance

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6861 som

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛥️ Protect your ride, own the tide!

COMPACT YET MIGHTY - Sized perfectly at 0.5 H x 3.75 OD x 0.34 inches to fit seamlessly on rudder and trim tabs, delivering maximum protection in minimal space.
EFFORTLESS INSTALLATION - Stainless steel Allen head and slotted drive system designed for quick, secure mounting—no hassle, no downtime.
ULTIMATE SALTWATER DEFENSE - Zinc alloy engineered to resist corrosion in harsh marine environments, keeping your vessel safe and sound.
CERTIFIED QUALITY ZERO COMPROMISE - Manufactured under strict ISO 9001 standards to ensure peak performance and durability every time.
COST EFFECTIVE CATHODIC PROTECTION - Protects iron, steel, aluminum, and magnesium components without breaking the bank—smart maintenance for savvy boaters.

Martyr Anodes CMR03 is a premium zinc alloy anode designed for saltwater use, providing reliable cathodic protection for marine vessels. Manufactured with ISO 9001 quality standards and featuring a stainless steel Allen head for easy installation, this compact anode safeguards metal components like iron, steel, aluminum, and magnesium from corrosion, ensuring longevity and performance in demanding ocean environments.

Specifications

Material	Zinc
Drive System	Slotted
Head Style	Trim
Exterior Finish	Aluminum,Stainless Steel,Steel,Zinc
Thread Size	Unthreaded
Point Style	Hex
Metal Type	Zinc
Brand	Martyr Anodes
Color	magnesium
Head Type	Hex
Item Weight	0.72 Kilograms
Thread Type	Standard
Thread Coverage	Partially Threaded
Thread Style	Right Hand
Thread Class	2A
Fastener Size	.5 inches
Size	.5 H x 3.75 OD x .34
Item Diameter	0.5 Inches
Compatible groove diameter	2 Inches
Number of Pieces	1
UPC	628309103545
Global Trade Identification Number	00628309103545
Item Package Dimensions L x W x H	9.29 x 6.54 x 2.32 inches
Package Weight	0.74 Kilograms
Item Dimensions LxWxH	3.9 x 3.8 x 1.6 inches
Brand Name	Martyr Anodes
Number of Items	1
Manufacturer	Martyr
Part Number	CMR03
Style	Zinc
Sport Type	Boating

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