This is a 4-piece set of cam jams. Includes 2 ropes, 2.4mm x 3.7 meters. New and unused. The photo shows a carabiner for my own use. This is a convenient cord tightener that allows you to easily tension your rope by simply passing the cord through the body and hooking it. A convenient 4-piece set for setting up tents and tarps. You can set up a tarp without poles by using trees or other objects. It is also very useful for securing luggage. Even if you are not familiar with rope work, you can apply tension by passing the rope through the hole from behind and pulling it down. Usable rope size: 2-5mm Size: Height 65mm x Width 34mm x Depth 15mm Weight: 20g x 4 pieces Material: Plastic, Stainless Steel ● The combination of a carabiner clip and a cam mechanism allows it to be attached to fixed endpoints such as D-rings and fixed hooks using a sturdy plastic carabiner and stainless steel gate. ● Can be used without knots. You can secure it by simply pulling the cord through the tightener's cam mechanism. ● Can be used to wrap and secure luggage. Use the corded clips to bundle sleeping bags, blankets, or secure light luggage to dollies, motorcycles, and wheelbarrows.