Most are metal. Stainless steel is cited most frequently, and a few items note cast aluminum construction for lighter models.
The listings mostly use wire-gate closures, with many descriptions specifying stainless steel wire-gate closures for secure holding.
Options include non-locking gates, screw-lock styles, and slide-to-lock mechanisms that allow each gate to be independently secured.
Package quantities vary. Examples in the listings include single-piece packs and packs of up to 8 units (counts such as 1 and 8 are shown).
Many items are described as stainless steel or weather-resistant stainless steel for durability; at least one listing notes cast aluminum construction for a lighter option.
Several models use dual-gated or S-shaped configurations and double carabiner layouts, allowing two attachments to be kept separate or nested as needed.
