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Effetto Mariposa is an Italian cycling component manufacturer that specializes in high-performance products for road and mountain biking. The company is known for its innovative designs and quality craftsmanship, and its products are used by professional and amateur cyclists alike.

One of Effetto Mariposa's most popular products is the Caffelatex tire sealant. This sealant is designed to seal punctures as they happen, preventing the need for a repair or replacement tire. It is a liquid sealant that is injected into the tire before use, and it can seal punctures up to 6mm in diameter. The sealant is also biodegradable and non-toxic, making it an environmentally friendly option.

Another popular product is the Giustaforza torque wrench. This is a precision tool that allows cyclists to accurately tighten bolts to the manufacturer's recommended torque. This is important as over-tightening or under-tightening bolts can cause damage to the bike and may compromise the safety of the rider. The Giustaforza comes with a wide range of bits to fit different bolts and has both imperial and metric units.

Effetto Mariposa also produces a range of other high-performance cycling components, including ceramic bearing kits and tubeless valves. The company is known for its attention to detail and commitment to quality, and its products are highly valued by cyclists around the world.