Bearing pulley with Screwgate or a Autolock locking carabiner
 
Specs
Materials: Aluminum
Working Rope Diameter 7-13mm
Max Working Load: 2x2=4kn
Strength: 20/8/7 Kn (Major/Minor/Open)
Weight: 108g/ 3.4oz
Certification EN 12278, EN 362
 
Technical Specs
Min. rope diameter: 7 mm
Max. rope diameter: 13 mm
Sheave diameter: 18 mm
Maximum working load: 2 x 2 = 4 kN
Efficiency: 85 %
Major axis strength: 20 kN
Minor axis strength: 8 kN
Open gate strength: 7 kN