Descender To Be Simple And Lightweight Caving. Designed For Caving, Simple Descender Is Easy To Use. It Is Used With Semi-Static Ropes From 8.5 To 11 Mm In Diameter. With A Footprint And A Reduced Weight, Simplifies The Progression In Narrow Passages. The Duration Of Life Of The Device Can Be Optimized By Turning The Pulleys Or Replacing Them. Easy To Use: - Ease Of Use. The Lowering Speed Is Adjusted By Tightening More Or Less The Free End Of The Rope, - Installation Diagram Engraved On The Rope Descender, - Clicchetto Opening Onto The Openable Flange That Allows To Insert The Rope Easily, While Holding The Device Connected To The Harness, And Facilitating The Passage Of The Splits, - Long Hole Connection That Allows You To Tilt The Hook Freino Z And Make The Unmissable Descender In Transfers From The Material To Snap Crescent. - Compatible With Semi-Static Ropes From 8.5 To 11 Mm In Diameter. Light Weight And Small Footprint: - Only 240 G, - Composed Of Two Aluminum Pulleys To Privilege The Lightness, - Simple Design, To Reduce The Risk Of Jamming In The Narrow Passages. Device Lifetime Optimized Turning Pulleys Or Replacing Them (D004Ca00).