Built for professional workshops, the Giustaforza 1-15 Pro combines a precise 1-15Nm range with a very small reversible ratchet head for faster work. The Deluxe version comes with a bicycle-specific bit set in a roll-up wrap pack, finished in red anodising.

Highlights

• 1-15Nm range with a 0.1Nm micrometric scale
• Compact reversible ratchet head, 1/4" square with 1/4" square-to-hex adapter
• Under 210g, 173mm long, red hard-anodised aluminium body
• Meets DIN ISO 6789 and ASME B107.300-2010
• Deluxe: S2 steel bicycle bit set in a wrap pack

Quick, repeatable settings

Pull the self-locking dial, rotate to your value and release to lock it. The wrench signals the set torque with a loud click and 3 degrees of free movement. Reverse the ratchet by turning the black crown around the button in the centre of the head.

Light where it counts

At under 210g it weighs less than half of many wrenches in this range, so the feedback at low torque values is clean and easy to read. No batteries, no electronics, no plastic parts.

Calibration

Every Giustaforza is individually checked and numbered. The +/- 4% tolerance is guaranteed for 5,000 cycles (5,000 clicks), after which Effetto Mariposa recommends recalibration; its calibration service extends the tolerance for another 5,000 cycles and returns the wrench with a calibration certificate. Always store the wrench at its minimum setting.

Compatibility & fit

For bicycle bolts from 1 to 15Nm, including carbon and other sensitive components. Calibrated for clockwise tightening; it can unscrew but won't click anticlockwise. For calibrated anticlockwise tightening choose the Giustaforza 1-15 Pro Evo. Always follow the torque value specified by the component maker.