From Karst Sports:
The Petzl String M90000 is a unique webbing protector. The string keeps the carabiner in its strongest orientation. It also protects the webbing from abrasion.
Available in two sizes. "String" is for webbing up to 15mm wide. "String L" is for webbing between 15mm and 20mm wide.
ManufacturerPetzlManufacturer Part #M9000Model #M9000SKU #29210mnnUPC33425400XXXXXEANDROP DOWNGenderAge GroupCountry of OriginFranceWarrantyManufacturer 3-year guarantee
From Summit Hut:
Description
The String from Petzl is a unique, patented carabiner-holding device for use in a quickdraw system. Named for its resemblance to a bikini, it keeps the lower carabiner in place for easy clipping, as well as protecting the quickdraw from abrasion.
Features
- Protects a relatively high wear area of the sling
- Holds the rope end carabiner in place on a quickdraw or sling
From Wilderness Exchange:
Petzl String This plastic piece not only holds the bottom carabiner of a quickdraw in place for easy clipping. It also serves to align the carabiner along its strongest axis, making your falls just that much more safer.
From Bent Gate:
The String (named after its' resemblance to a bikini) is a rubber accessory designed to hold therope clipping carabiner on quickdraws in place to make clipping easier.
From Gear X:
Webbing Protector.An essential little extra!The String keeps the carabiner in its strongest orientation. It also protects the webbing from abrasion