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I acquired my Edelrid Spoc from CampSaver.com in 2020.
My Edelrid Spoc is 46 mm. long, 62 mm. wide, 24 mm. high, and weighs 60 g.
This pulley consists of a pulley sheave and a spring-loaded eccentric cam between two 2.3 mm. aluminum alloy side plates. The sheave is 24 mm. in diameter and 13 mm. wide, with a 9 mm. wide, 2.0 mm. deep U-shaped rope groove. The sheave axle is a rivet. There are washers on each side of the sheave, between the sheave and the side plate.
The cam has large, very sharp teeth in a 2.3.4.3.3.2.1.2.3 tooth pattern. The cam is mounted on a a turned pin that is riveted to one side plate. The other end has a notched protrusion that engages a slot in the swinging side plate. A 0.6 mm. wire spring sits in a slot in the cam, where it wraps five times around the cam axle and is secured by a hole in a plastic top block riveted to the fixed side plate. A 1.2 mm. cord attached to the cam wraps around the cam and passes through a hole in the plastic block, where it exits at a notched cam cleat. The end of the cord has a bead and heat-shrink cover. Pulling the cord opens the cam, which can be locked open by sliding the cord into the cam cleat.
The outside of swinging side plate is stamped with "EDELRID" and two curved arrows that partially circle the pulley sheave in a clockwise direction. The inside of the swinging plate is printed with a factory icon and 2019 10 034043." The outside of the fixed plate is stamped with "EDELRID" and printed with "CE0123," EN 567:2013," "EN 12278:2007," "Ø 7-11mm," a book-with-an-"i" icon, and a forked arrow around the sheave axle labeled "15 kN."
The Spoc is another nicely-made small pulley.
The cord actuating the pulley takes some getting used to, as I find myself often locking the cam open when I don't mean to. The location of the cord protects it from wear. If it does break, replacing it should be fairly easy.
The cam teeth are very sharp. While sharp teeth should not hurt ropes, I expect to occasionally draw blood from my fingers.
Like many small hauling pulleys, the Spoc can also be used as an emergency ascender.
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