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Racer's Edge engine tuning screwdriver allows for safe, quick, and convenient adjustments for hard-to-access low and high speed needles on nitro buggies and truggies. The aluminum handle is lightweight, durable aluminum and features a knurled grip as well as a rubber-tipped end to conveniently shut off the negine by plugging the exhaust outlet or contacting the flywheel through the bottom of the chassis. The overall length of the screwdriver tip can be adjusted between 10-100mm.