3-in-1 Pedal Wrench

One tool for the common pedal interfaces

Modern pedals split across three engagement formats: a 15 mm wrench-flat on the spindle, a 6 mm hex at the inboard end, or an 8 mm hex at the inboard end. A workshop that sees more than a couple of customer bikes a week needs a tool for each one, which usually means three separate wrenches taking up three separate spots in the toolbox. The 1620/2P-US is the answer when storage is tight or when a pedal job is the only thing the toolbox is making room for.

The tool carries a 15 mm open-end at one end (official SW size), a 6 mm hex bit and an 8 mm hex bit (double-ended, stamped 8&6 on the tool), covering the common inboard-hex pedal interfaces. All three formats live in one compact body. There is no swapping inserts, no losing the bit you need under the bench.

Compact does not mean compromised

The body is laser-cut tool steel, heat-treated for strength and durability, with a plastic-dipped handle. Official length is 200 mm and weight is 152 g, so it sits in a service-call kit or home drawer without taking a full-size pedal-wrench slot.

Compatibility

Covers the three common pedal-spindle interfaces:

• 15 mm wrench flats (official SW size; Unior's service manual names a 15 mm wrench as one of the two common pedal tools)
• 6 mm hex at the inboard end (official S1 size on the 1620/2P)
• 8 mm hex at the inboard end (official S size; Unior's service manual names a 15 mm wrench or an 8 mm hex as the two common pedal-tightening tools)

If your pedals offer more than one of these formats, pick the one with the best leverage access on your particular crank, which is usually the 15 mm flats. Our pedal-install guide walks through the format-selection logic in detail.

Specs

• Length: 200 mm; weight: 152 g
• Engagement: 15 mm open-end + 6 mm hex + 8 mm hex bits
• Material: Laser-cut tool steel, heat-treated
• Finish: Trivalent chrome plated
• SKU: 1620/2P-US

Built in Zreče, Slovenia

Unior has been forging hand tools in Zreče since 1919, and sponsors professional road and mountain-bike race teams. Bike Perfect summarised the brand's positioning this way:

“Unior doesn't quite have the name recognition of Park or Pedros... they are as good if not better in quality, and they have some clever solutions.”

The 1620/2P-US is one of those clever solutions. Combining the three pedal-engagement formats into one laser-cut body is the compact answer when a full-size pedal wrench is more tool than the job needs.

Pro tip from our mechanics

Before you start, identify which interface your pedal uses; on dual-engagement pedals, picking the format with the most leverage access (usually the 15 mm flats) makes the install easier and the removal much easier. Our pedal-install guide walks through how to read the spindle, anti-seize the threads, and torque to spec without overtightening: How to install and remove bike pedals →

FAQ

What three interfaces does the 1620/2P-US carry? A 15 mm open end (SW), an 8 mm hex (S), and a 6 mm hex (S1). Unior's official copy says the compact design covers the common pedal interfaces and a wide range of pedals. The 8 mm and 6 mm hexes are opposite ends of one through-bit, stamped 8&6 on the tool.

How long and heavy is the 1620/2P-US, and what is it made of? Official length is 200 mm and weight is 152 g. It is laser-cut tool steel, heat-treated, with a plastic-dipped handle and a trivalent-chrome finish. Unior positions it as small and lightweight for home or on-the-go use.

Are the hex bits removable, and is this a ratchet? No. The 8 mm and 6 mm hexes are a single through-bit, not interchangeable inserts, and the tool is not a ratchet. Unior lists no spare bits or tips for 1620/2P.

Does the 1620/2P-US fit every pedal ever made? No. Official coverage is the three common spindle interfaces (15 mm flats, 8 mm hex, 6 mm hex) and a wide range of pedals, not every pedal. Unior's service manual still names a 15 mm wrench or an 8 mm hex as the two everyday tightening tools; this wrench adds the 6 mm hex as a third official size.