This is the stock replacement needle for the O.S. FS.52 Surpass. Features: Knurled end for better finger grip. Includes: One needle, one needle -O- ring, and one 1.5mm set screw for needle extentions. Specs: The needle is 29mm long, from one end to the other. Comments: This is the replacement "Needle only" for the #40N carb. One other way to purchase this needle,is with the Needle valve assembly. The part number for the needle valve assembly is OSMG7271. 10/31/96 SJM. BOX DIMENSIONS: 1.75" W. X .50" H. X 3.50" L. BOX WEIGHT: .02 LBS. OS EnginesPart OSM44281970