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I acquired my Delaman Roller Carabiner from Amazon.com in 2019.
My Delaman Roller Carabiner is 59 mm. long, 109 mm. wide, 17 mm. high, and weighs 58 g. It contains a pulley sheave mounted in a specially-shaped non-locking key gate carabiner. The sheave is 12 mm. wide and 11.9 mm. in diameter. The 10 mm. wide rope groove reduces the running diameter to 10.7 mm.
The rear has "↔25↕8↺8kN" (where "↺" represents an open carabiner icon) in forged raised letters.
I don't normally carry pulleys caving, but when I do, I prefer pulleys with larger-diameter sheaves because they don't force such a sharp bend in the rope. This is less important for flexible climbing ropes than it is for stiff caving ropes like PMI Pit Rope.
The Delaman is smaller and lighter than the Petzl Rollclips. I prefer the traditional screwgate over the obnoxious autolock gates that have become so popular with people not trained well enough to know when to lock a carabiner.
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