CMC Rescue

ProSeries® Aluminum Key-Lock Carabiners

The Most Advanced General-Use Rescue Carabiner on the Market.


Rescuers working in the most demanding circumstances will appreciate our ProSeries Aluminum Carabiners, the first aluminum carabiners to meet NFPA strength requirements for general use. Combining high performance with minimum weight, these carabiners significantly reduce the weight of a rescuer’s gear while maintaining the highest possible margin of safety. The patented key-lock design eliminates snagging when removing the carabiner from your harness, and a redesigned gate provides a full 1.1 inch (28 mm) opening on the standard size version and a 2.1 inch (53 mm) opening on the XL version. Gate choices include the traditional Screw-Lock, our easy-to-open-with-one-hand Auto-Lock and our innovative Manual-Lock. Both of the XL carabiners have a removable keeper pin.

Every carabiner is proof loaded. Serial numbers on every carabiner.

ProSeries Major Axis Minor Axis Major, Gate Open
300221 49kn 17kn 15kn
300233 40kn 11kn 15kn
300262 40kn 13kn 12kn
300241 44kn 14kn 12kn
300253 43kn 13kn 12kn



Working-At-Height / Industrial Rope Access / Technical Rope Rescue
Working at height requires reliable, quality equipment. The ProSeries® Aluminum Key-Lock Carabiners can be used with confidence for work positioning or fall restraint protection in work-at-height maneuvers for industrial rope access or technical rope rescue when used in accordance with the regulatory safety standards they fall under. Always use life safety equipment and gear according to the regulatory safety standards for which it is classified and/or certified.


ProSeries® Aluminum Key-Lock Carabiners Product Specs

Option Item Product Weight Gate Opening Interior Length Gate / Color NFPA Rating 3 sigma MBS Price
Screw-Lock, Brite 300221 5 oz (142 g) 1.1 in (28 mm) 4.05 in (103 mm) Screw-Lock / Brite General Use 49 kN (11,015 lbf) $ 45 Add to Cart
Auto-Lock, Red 300233 5.3 oz (150 g) 1.1 in (28 mm) 4.05 in (103 mm) Auto-Lock / Red General Use 40 kN (8,992 lbf) $ 52 Add to Cart
Manual-Lock, Slate 300262 5.3 oz (150 g) 1.1 in (28 mm) 4.05 in (103 mm) Manual-Lock / Slate General Use 40 kN (8,992 lbf) $ 57 Add to Cart
XL Screw-Lock, Brite 300241 9.4 oz (266 g) 2.1 in (53 mm) 6.62 in (168 mm) XL Screw-Lock / Brite General Use 44 kN (9,891 lbf) $ 66 Add to Cart
XL Auto-Lock, Red 300253 10.2 oz (289 g) 2.1 in (53 mm) 6.62 in (168 mm) XL Auto-Lock / Red General Use 43 kN (9,666 lbf) $ 72 Add to Cart

ProSeries® Aluminum Key-Lock Carabiners

ProSeries® Aluminum Key-Lock Carabiners In The Field

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