This genuine Renault 7700001643 control knob is an essential OEM replacement part designed for a wide range of Renault agricultural tractors. With an outer diameter of 30 mm, an inner diameter of 10 mm, and a height of 25 mm, this durable knob weighs only 0.005 kg. It ensures precise control and maintains the original functionality of your tractor's cabin. Compatible with numerous Renault tractor series including 50, 55, 58, 60, 65, 68, 70, 75, 77, 80, 85, 88, 90, 95, 98, 103, 106, 110, 113, 120, 133, 145, 155, 160, 180, 301, 361, 421, 460, 461, 462, 466, 480, 486, 490, 496, 521, 551, 556, 581, 651, 652, 656, 681, 751, 752, 781, 782, 8040, 851, 854, 891, 950, and 954 series, ensuring a perfect fit and reliable operation.