The Effetto Mariposa Giustaforza 1-15 Fixed Torque Wrench is a precision bicycle tool for tightening sensitive components to the correct torque. Its compact fixed head reaches tight spaces, while the 1-15Nm range and 0.1Nm scale allow fine adjustment. A light aluminium body, clear click feedback and mechanical design make it well suited to careful workshop use. It is available as a wrench only or as a Deluxe kit with cycling-specific bits and a practical wrap.Key Features and Benefits:1-15Nm torque range: The wrench covers the low torque values used on many bicycle components, including stems, seat clamps and other sensitive fittings. This helps you apply the specified force without relying on guesswork, reducing the risk of loose bolts or damage from excess torque.0.1Nm micrometric adjustment: The scale allows you to set torque in fine 0.1Nm steps. Pull and rotate the black dial to select the value, then release it to lock the setting. This gives you precise control when a component calls for a specific torque and helps prevent changes to the setting during use.Small, non-ratcheting fixed head: The minimal head takes up less space than a ratcheting design. It can reach bolts in restricted areas, such as some seat clamps, where a larger head may obstruct access. This makes it easier to tighten hard-to-reach fasteners to the correct value.Open-end wrench compatibility: The supplied 1/4in hex-to-square adapter allows you to use compatible open-end wrench attachments. This is useful for fittings such as flare nuts on hydraulic brake hoses, where a standard bit may not fit. The adapter is included with both the standard and Deluxe versions.Clear torque feedback: A loud click and 3° of free movement signal when the set torque has been reached. This gives you a clear indication to stop applying force, helping you tighten bolts consistently without relying on feel alone.Lightweight aluminium construction: The body weighs less than 190g and measures 173mm in length. Its low weight makes the wrench easier to handle at small torque values, where the effort needed to support a heavy tool can affect your sense of the force applied. The compact size also helps when working around crowded parts of a bike.Durable mechanical design: The hard-anodised aluminium body has laser-etched markings and contains no plastic parts, batteries or electronics. Its mechanical click system is shock tolerant and avoids the need for battery replacement. Each wrench is checked and numbered, and the design meets DIN ISO 6789 and ASME B107.300-2010 quality standards.Defined calibration accuracy: The wrench has a tolerance of ±4% for 5000 cycles, after which it should be recalibrated. Effetto Mariposa offers a laboratory calibration service that renews this tolerance for a further 5000 cycles and supplies a certificate. Returning the wrench to its minimum 1.0Nm setting after use also helps maintain correct storage practice.Correct torque is important when working with carbon parts, lightweight fittings and other components with strict tightening limits. The Giustaforza allows you to follow the value printed on the part or stated in its technical documents, rather than judging tightness by hand. Its fine scale and compact head support repeatable maintenance, while the mechanical design keeps the tool simple to use. The wrench is calibrated for clockwise tightening only; counter-clockwise calibrated tightening requires the Giustaforza 1-15 Pro Evo.Choose the wrench-only version for an existing tool kit, or the Deluxe version for a complete cycling-specific set. The Deluxe kit includes an S2 steel bit selection, a 100mm extension, three 100mm bits in hex 4, hex 5 and T25, plus standard-length hex and Torx bits. With its precise adjustment, compact access and durable construction, the Giustaforza 1-15 Fixed is a practical addition to a workshop built around accurate bicycle maintenance.