what is the min. thickness tool can handle ? should there be a space between the clamp bar and the inside tool face?

I've used this tool to tighten the smallest zip ties. I believe the answer to your second question is no. I prefer this tool to one I have that sets a spring tension.

Will this work on 1/8 inch diameter fuel connections on a boat?

I'm not really sure what you mean by 1/8" connections on a boat. This is a nylon bander. It will not work with metal bands if that's what you're referring to.

Will these work with large hvac pull ties?

Yes that is what I purchased them for and they worked great

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

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Klein Tools 86570 Tie Tensioning Tool, for Ties Rated at 120 to 250-Pound, Su...

Product ID: 7798691

Details

Brand
KLEIN TOOLS
Color
Black and
Material
Nylon
Maximum Diameter
1.2
Style
Tensioning

💪65 lbs max tension

📏15/32-inch max tie width

🖐️Ergonomic handle grips

EC$209

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Tension like a pro, every time — don’t get left behind!

COMPACT LIGHTWEIGHT - Weighing just 11.36 ounces, it’s easy to carry and perfect for on-the-go professionals.
ERGONOMIC COMFORT GRIP - Designed with handle grips that reduce hand fatigue during extended use—work smarter, not harder.
FITS INDUSTRY STANDARD TIES - Compatible with ties rated 120 to 250 pounds and up to 15/32-inch wide for versatile use.
TRUSTED LEGACY CRAFTSMANSHIP - Backed by Klein Tools’ 160+ years of American-made quality and durability you can rely on.
POWERFUL PRECISION TENSIONING - Delivers up to 65 pounds of controlled tension for secure, professional-grade tie fastening.

The Klein Tools 86570 Tie Tensioning Tool is a durable, nylon-built manual tensioner designed for cable ties rated between 120 and 250 pounds. It supplies up to 65 pounds of tension with a maximum tie width of 15/32 inch, featuring ergonomic handle grips for comfort. Trusted by professionals for over 160 years, this lightweight tool ensures precise, reliable tie fastening for demanding jobs.

Specifications

ASIN	B004G3RO5G
Best Sellers Rank	#29,156 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #48 in Tie-Down Ratcheting
Brand Name	KLEIN TOOLS
Color	Black and Orange
Customer Reviews	4.7 4.7 out of 5 stars (2,615)
Global Trade Identification Number	00092644865701
Included Components	Tools
Item Type Name	Nylon Tie Tensioning Tool
Item Weight	11.36 ounces
Manufacturer	Klein Tools
Manufacturer Part Number	86570
Manufacturer Warranty Description	Klein Tools warranty covers any defects in quality or workmanship. It does not cover a tool if the tool simply wears out or has obviously been abused. Our quality data demonstrates that we have very few quality issues. Those that we do find are addressed aggressively. Our quality is excellent because we use the highest quality materials and employ the most modern manufacturing and quality systems …
Material Type	Nylon
Maximum Diameter	1.2 centimeters
Model Number	86570
Number of Packs	1
Number of Pieces	1
Product Style	Tensioning Tool
Tensile Strength	65 pounds
UPC	092644865701
Unit Count	1 Count

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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