The Large Aluminum Locking D is identical in size to our very popular Large Steel Rescue Carabiner except for the fact that it is constructed entirely of aluminum rather than steel. Light in weight, this is a great multipurpose carabiner and an ideal choice for situations such as are found in mountain rescue, where weight is a concern and carabiner volume and strength are equally critical.
The SMC Micro PMPs (singles and doubles) are exactly what you need. These are the smallest of three sizes of Prusik Minding Pulleys made by SMC, but dont let their small size cause you to question their performance! These pulleys are designed and manufactured to the same high quality standards as our full-sized PMPs.
The SMC X-Large Locking Steel Carabiner is manufactured using high quality Alloy Steel for optimal ratio of strength to weight. The off set D shape results in a larger gate opening that easily fits over litter rails. The sleeve locks on the gate rather than the body of the carabiner, eliminating problems of the knob binding on the frame once the carabiner has been loaded. The X-Large Locking Steel carabiners are third party certified by Underwriters Laboratories to meet NFPA 1983 “G” General Use.
Heat-treated Large Steel Locking D was created to address the need for a very strong steel carabiner without adding unnecessary weight and size. Built to the same specifications as the standard SMC Large Locking Steel Carabiner and certified by Underwriters Laboratories to meet NFPA “G” General Use standards but with an additional step of heat-treatment in order to provide an incredible 30% greater strength.