With the cord lock's 25mm x 34mm x 6mm body cast as a single piece of the same type of plastic used in many automotive engines, SGT KNOTS Heavy Duty Wheeled Cord Locks are able to withstand extreme environments ranging from -50F to 150F, and can also handle prolonged exposure to moisture (including salt water) and many kinds of chemical wear and tear. The heavy-duty plastic wheel lock clicks firmly into place with ease, and won't budge even a millimeter until you push to release. When your gear is on the line, this is the cord lock you want securing it.VETERAN OWNED and OPERATED - Just like the Marine Corps, SGT KNOTS is committed to be the best of the best. We continue to live by the motto, Semper Fidelis—Always Faithful. Our loyalty to our customers is what makes us who we are, and the reason we continue to grow in popularity and product offerings. We promise to maintain the strength and consistency of our products. We also pass down our bulk savings to our customers. PACKAGE OPTIONS - Receive excellent bulk savings when you choose from our convenient packs of 10, 25, and 50. Available in Black. NON-SPRING ACTION - Features a solid plastic, sliding lock that is reliable and easy to use. Our wheeled cord lock stopper has less moving parts than a spring-loaded cord lock for maximum dependability in the field. DELRIN THERMOPLASTIC - The body of the lock is made with Delrin, an industrial-strength, specially engineered thermoplastic widely used in automotive combustion engines. SGT KNOTS heavy-duty cord lock has a working temperature range of -50 to 150 degrees Fahrenheit, repels moisture, resists saltwater, and protects against a wide range of chemicals and destructive agents. WHEELED CORD LOCK - Our durable, multi-purpose cord lock is the perfect tool to secure, organize, and manipulate your paracord, rope, and twine supplies. Useful in various indoor and outdoor applications including drawstrings, paracord fastener, shoe laces, bags, luggage, clothing, and projects around the house.Brand: SGT KNOTS. Color: Black. Material: Plastic. Date First Available: May 16, 2018. Manufacturer: SGT KNOTS. Item Weight: 1.2 ounces. Is Discontinued By Manufacturer: No. Best Sellers Rank: #72,506 in Arts, Crafts & Sewing. Customer Reviews: 4.3 4.3 out of 5 stars 118 ratings 4.3 out of 5 stars. : B06VV878VS. Item model number: SK-WCL-10-Black. Package Dimensions: 3.94 x 3.35 x 0.71 inches.