Use the Taquet Turrets when the end is to face the pitfall. The ball turrets have two rows of Delrin balls to allow them to rotate in high loads .-- Use the TAQUETT turrets when the end is to face the pitfall. The ball turrets have two rows of Delrin® balls to allow them to pivot in high loads. They have a support spring and an U -shaped adapter allowing the use of several types of pulleys. The 402 and 403 models are equipped with a double cleat, for 2 -speed palans systems. Highlight: 146mm Weight: 398gr Diameter Diameter Mini: 8mm, Maxi: 10mm Fixing center: 19mm To use with the double 57mm pulleys TRIPS. To be used for: listening to GV, fittings of adjustment / jammer / blocker come for:- 470-505- korsar- marauder- ponant- Windy- ...