304 STAINLESS STEEL - These quick links are made of stainless steel, which has higher hardness and corrosion resistance than other common alloy steel materials. Quality hardware resists harsh weather for long periods of time and is extremely durable and safe. EASY TO USE - Twist clockwise the thread to open and anti-clockwise to close. And the extremely smooth threads are very convenient for installation and disassembly even if it is closed for a long time. MAX. LOAD 500 LB - Unique design and reinforced stainless steel material for improved load carrying capacity. The maximum load capacity of this connector is 500 lb. Almost all the needs are met. Tip: Please don't exceed the max load for safety. MULTI-PURPOSE - M4 stainless steel chain connector perfect for outdoor activities such carabiner, swing set, shade sails, climbing ladder, hiking, camping, fishing, key chain, backpack, ropes, pets and so on. colour: silver Material: stainless steel Package Contents: 12 x m4 Stainless Steel Chain Connector Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.