Friction Management Devices

Caterpillar Friction Savers for up to 5/8" Lines, 1 foot

Item# CAT

Product Description
Specifications and Instructions
Reviews (6)
This simple and flexible “conduit-style” rope sleeve presents a number of advantages over alternative methods, not the least of which are very simple installation and removal. If you are already accustomed to using a sleeve rather than ring or pulley, here’s something you’re really going to love about the Caterpillar—because it’s not C-shaped like leather versions, it slides freely down rope without manipulation. There’s no need to pull rope through it to prepare for installation. It stays low until you’re ready to go. This is also convenient when redirecting your tie-in point (TIP) aloft—just pull it from the crotch and the Caterpillar slides to the lowest point, even the opposite end if necessary. We recommend one for each end on double-spliced ropes, then there’s always one awaiting the redirect. The Caterpillar is highly durable and made of galvanized steel conduit with thick PVC jacketing. Weight (per foot) 5-oz.

• Simple to install and remove
• Slides freely down rope
• Flexible, light, and extremely durable
• Rot and moisture proof
• Works great dry or wet
• Conforms instantly to uneven surfaces
• For ropes up to 16-mm diameter
• Doesn’t pass a knot or splice over 16-mm diameter

Restrictions :

CE Certified :

Meets ANSI Requirements :

Teeth per 30 mm / inch :  

Length : 1 ft

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Inner Diameter : 5/8" (16mm)

Inner Diameter : 5/8" (16mm)

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Color : Black

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Terms For International Shipping :

PDF Instructions : Click Here

Parts PDF : Click Here

Makes Gallons :

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The most sincerest form of flattery

The concept was to save the cambium from rope burn but these sleeves will make your arborist ropes stay clean so they last longer. I strongly advocate never have a running rope on the bark plus reducing friction during DbRT is a plus. Beware of making them bend around a too small limb or you can split the spiral locked metal inside. Taping each end is also a good idea to ease it's placement and increase the visibility.

Dan House

Tree Climbing Kansas City


Dan House invented this

I'm glad Sherrill is selling these now. They're the best.

Robert Dallmann

Gaithersburg, MD.


Good but be careful

Works better than the leather but make sure to retire it when the spiral metal starts to separate. It can easily cut your climb line.

Dana Anderson

York, ME


Not so good

I ordered this for my boyfriend but he would not give it great reviews. The coils started to poke out and cut his climbing line. Would definitely not recommend this.


New Hampshire


On the right track

I was excited when I purchased this friction saver. It rarely gets stuck in the tree, a distinct advantage over the ring and ring friction savers, which i have used before. It is very easy to install as well. I have purchased two of these and both broke. The first one broke because of use in a crotch that was near the minimum bend radius and the metal separated. The second broke when recrotching within the tree. It was a day near 0 degrees Fahrenheit and when I pulled it to me it hit the tree and the plastic covering broke off.


Minneapolis, MN


Owner, operator

I bought two of these and have been very disappointed. They are difficult to keep over the branch during use, they slide away down the rope so easily (compared to a leather one) and worst of all they get very hot. The plastic melted off of mine. Not a fan at all.




(e.g. Great product, Not what i expected)
(e.g. Boston, MA)
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