Here's what other sites are saying:
Petzl's Gemini Double Prusik minding pulley with swinging side plates is a double version of the MINI with a becket for use in technical hauling systems.
If you need to work with two ropes, the Petzl Gemini Pulley is what you need to haul.
Make your complex hauling systems work more smoothly with Petzl's Gemini Double Prusik Pulley, a double pulley design equipped with an auxiliary attachment point for use in technical hauling systems. Crafted with aluminum and very lightweight, this pulley works well with a Prusik friction hitch with special side plates, parallel mounted sheaves, and sealed ball bearings.
- Mountain Gear
The Petzl Gemini double pulley is equipped with an auxiliary attachment point which makes it easy to setup technical haul systems. PRODUCT FEATURES: Special side plates designed for use with a Prusik friction hitch in lightweight progress capture systems Parallel mounted sheaves and auxiliary attachment point for creating different types of hauling systems, including the most complex Sheave mounted on sealed ball bearings for excellent efficiency Lightweight (aluminum side plates and sheaves) Weight : 135 g Min. rope diameter : 7 mm Max. rope diameter : 11 mm Sheave diameter : 25 mm Efficiency : 91 % Working load : 6 kN (1.5 kN on one strand) Breaking strength : 23 kN Material(s) : aluminum side plates, aluminum sheave
- Appalachian Outdoors