Large size locking carabiners developed by SMC especially for the needs of the fire and rescue communities. Available in several different metal finishes, as well as in both NFPA (Class G) and non-NFPA versions. Black zinc coated models are ideal for tactical operations while the stainless steel model is best for corrosive environments. The large gate opening fits easily over litter rails and all models have stainless gates and locking sleeves for greater strength and reliability.