1. soft closing, can support 4kgs 2. more ... ISO9001/14001 4. stainless steel, high class 1. soft closing, can support 4kgs2. more than 80000 cycles3. ... quality from the very original material.LF-33, ROTARY DAMPER, OPERATION ANGLE 110°, CLOCKWISE OR COUNTER CLOCKWISE, STAINLESS ... close time falls below 2 sec (for ringor cover) before 50,000 cycles are complete this is considered a failure. Rotary damper ...