how can i tell if this old do a standard motorcycle spark plug hole 250 cc yamaha motor

You need to find the thread diameter size of your spark plug. Look up what NGK plug will work for your bike and then check this site: https://www.math.uwaterloo.ca/~rblander/NGK.txt Field one of the NGK code is thread diameter size. Then get the appropriate helicoil kit. Remove the head before drilling out and repairing the threads or you will get metal shavings in your cylinder and ruin your engine.

is Inserts stainless steel or steel ?

They are made from Chrome Vanadium Steel. I’ve used my set several times now and it’s a decent quality kit.

Can you supply me with a kit for my stihl chainsaw ms 251 spark plug ?? plug # ngk cmr6h !!

No, I purchased this product, this is not how you contact the seller.

Are the Helicoil made out of Stainless steel?

chrome vanadium, like many hand tools, such as wrenches.

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Metric Helicoil Thread Repair Kit: 131-Piece Heli Coil HSS Drills Inserts Taps & Tools M5 M6 M8 M10 M12 Automotive Engine Spark Plug Cylinder Insertion Rethreading Tools Universal Rethread Restorer

Metric Helicoil Thread Repair Kit: 131-Piece Heli Coil HSS Drills Inserts Taps & Tools M5 M6 M8 M10 M12 Automotive Engine Spark Plug Cylinder Insertion Rethreading Tools Universal Rethread Restorer

Product ID: 116793808

🔩131-piece comprehensive kit

⚙️High-speed steel (HSS) drills & taps

🛠️Universal M5-M12 thread sizes

$111.16

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Description

🔧 Fix it right, fix it once — the ultimate thread rescue kit!

PORTABLE ORGANIZED - Robust steel case keeps your toolkit ready for any emergency, anywhere.
USER FRIENDLY DESIGN - Intuitive tools and included tap wrenches make DIY and pro repairs seamless.
VERSATILE SIZE RANGE - Covers M5 to M12 threads, perfect for automotive, engine, and spark plug repairs.
COMPLETE THREAD REVIVAL - Restore stripped threads effortlessly with a full 131-piece professional set.
PRECISION ENGINEERED TOOLS - Durable HSS drills and taps ensure clean, accurate rethreading every time.

The Metric Helicoil Thread Repair Kit is a 131-piece professional-grade toolkit featuring high-speed steel drills, taps, and helicoil inserts designed to restore stripped or damaged internal threads from M5 to M12 sizes. Ideal for automotive and engine repairs, it offers durable, precise tools housed in a sturdy steel case for easy transport and storage, making it an essential companion for mechanics and DIY enthusiasts alike.

Specifications

ASIN	B07MZQK1HP
Best Sellers Rank	#5,124 in Automotive ( See Top 100 in Automotive ) #2 in Thread Metric Inserts & Repair Kits
Brand	SEDY
Customer Reviews	4.6 4.6 out of 5 stars (1,472)
Date First Available	January 21, 2019
Is Discontinued By Manufacturer	No
Item Weight	4.71 pounds
Item model number	13
Manufacturer	SEDY
Manufacturer Part Number	T97381
Product Dimensions	15 x 1.6 x 7.9 inches

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$111.16

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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