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.

Sedy 131pc Thread Repair Kit Hss Drill Helicoil Repair Kit

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

€ 118.48

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

Description

🔧 Fix it right, fix it once — the ultimate thread repair kit for pros and perfectionists.

BUILT TO LAST - High-speed steel drills and taps engineered for maximum durability and long-term performance.
ORGANIZED ON THE GO - Durable steel case keeps your toolkit neatly stored and ready for any emergency fix.
EFFORTLESS PRECISION - User-friendly design ensures smooth, accurate rethreading—perfect for pros and DIYers alike.
VERSATILE REPAIR POWER - Covers metric sizes M5 to M12, ideal for automotive, engine, and spark plug thread restoration.
COMPLETE THREAD REVIVAL - Restore stripped threads with 131 professional-grade tools for flawless repairs every time.

The SEDY 131Pc Thread Repair Kit is a premium, all-in-one solution featuring high-speed steel drills, taps, and helicoil inserts for restoring stripped metric threads from M5 to M12. Designed for durability and ease of use, it comes in a rugged steel case, making it the go-to toolkit for automotive and engine repairs with over 1,000 five-star reviews.

Specifications

ASIN	B07MZQK1HP
Best Sellers Rank	#2,159 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Thread Repair Kits
Brand	SEDY
Customer Reviews	4.6 4.6 out of 5 stars (1,056)
Date First Available	4 July 2019
Item Weight	2.14 Kilograms
Item model number	13
Manufacturer	SEDY
Manufacturer Part Number	T97381
Product Dimensions	38.1 x 4.06 x 20.07 cm; 2.14 kg

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

€ 118.48

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

SEDY 131Pc Thread Repair Kit, HSS Drill Helicoil Repair Kit Metric M5 M6 M8 M10 M12

Description

Specifications

Common Questions