This piece has components from 3 different race cars, all gear box pieces.  The brass, outer ring is from the Ford GT.  The smaller, washer is from the Aston Martin Valkyrie (just completed) and the ball bearing is from the Mazda RT 24-P.  They have all been set in resin on a black, leather, fully adjustable strap.  A great unisex gift for anyone that loves motorsport and cars.