Thank you for viewing. No instruction manual. Used at the gym for about 2 years. When last used, it was confirmed to be working without any problems. However, please purchase only if you understand that this is a used item. The Petzl GRIGRI 2, equipped with an assisted braking function, compatible with rope diameters of 8.9-11mm. - Brand: Petzl - Model: GRIGRI 2 - Rope Diameter: 8.9-11mm - Weight: 185g - Safety Standards: CE 0082 UIAA - Color: Blue - Function: Assisted braking function