DMM Climbing - I-Beam Boa

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Steel I-beam Boa HMS

I-Beam Boa

The I-Beam Boa's extended top bar fits multiple attachments and works with a large gate opening to give ease of use with thick ropes and slings. Its asymmetric shape sits naturally in the hand, while curved rope baskets allow attachments to centralise for stable loading.

Hot forging steel carabiners allows the use of I-Beam construction techniques that reduce weight while keeping strength. The I-Beam Boa has all the benefits of its solid bar equivalent without the weight penalty.

Steel Locking carabiner for maximum strength and resistance to wear

Steel carabiners are very strong and highly resistant to wear. They are suited to environments where they will be subjected to high loads and heavy use, such as climbing walls and outdoor centres.

HMS carabiner for ease of rigging

HMS carabiners have extended top bars to accommodate multiple attachments like slings and knots. Their top bars are curved, allowing attachments to self centre and encouraging optimal loading. HMS carabiners tend to be large, for better compatibility with thick ropes and while wearing gloves.

Large gate opening and high internal volume for easy handling and more attachment options

The gate opening is the distance between the nose of a carabiner and the gate when it is fully opened. Larger gate openings make a carabiner easier to use while wearing gloves, and with thick ropes and slings. Internal volume refers to the area inside a carabiner, and large internal volumes mean easier attachment and removal of multiple devices, knots and slings.

Keylock nose eliminates snagging

This carabiner's nose slots into a groove in the gate, allowing it to achieve full strength without a gate notch. This creates a clean internal profile that won't catch on gear, bolts or slings, giving easier clipping and removal from systems.

I-Beam construction for optimum strength to weight ratio

I-Beam construction techniques allow carabiners to be lighter without compromising strength. This is achieved through hot forging, a process which allows metal to be made into complex shapes that improve functionality.

Product Name	Product Code	Colour	MBS (Major Axis)	MBS (Minor Axis)	MBS (Gate Open)	Dimensions	Weight	Gate Opening (X)	Certification
I-Beam Steel Boa HMS Screwgate	C892	Light Gold	40kN TBC	16kN TBC	18kN TBC	83 x 122mm	TBC	TBC	TBC
I-Beam Steel Boa HMS Kwiklock	C893	Light Gold	40kN TBC	16kN TBC	18kN TBC	83 x 122mm	TBC	TBC	TBC
I-Beam Steel Boa HMS Locksafe	C897	Light Gold	40kN TBC	16kN TBC	18kN TBC	83 x 122mm	TBC	TBC	TBC
I-Beam Steel Boa Locksafe iD	C897-ID	Light Gold	40kN TBC	16kN TBC	18kN TBC	83 x 122mm	TBC	TBC	TBC