Unior 1631/5 Universal Round Spoke Key

The Unior 1631/5 universal round spoke key adjusts wheel spokes with eight different nipple sizes. It is designed for travelling mechanics, cycle tourists and workshops working with different wheels.

• One key for 8 nipple sizes, from 3.3 to 5.5 mm
• Lightweight and compact: weighs 29 g and measures 38 mm in length
• Suitable for different wheels, with a flat profile for standard external spokes
• Zinc-plated die-cast zinc alloy body
• Check your nipple size before choosing: sizes from 3.3 to 5.5 mm are available

Technical specifications

• Model: 1631/5
• Item code (SKU): 629573
• Nipple sizes: 3,3; 3,45; 3,7; 4,0; 4,2; 4,4; 5,0; 5.5 mm
• Material: Zinc-plated die-cast zinc alloy
• Dimensions: 38 mm long × 9.4 mm high
• Weight: 29 g
• Compatibility: Flat profile for standard external spokes; the 3.3 mm slot accepts 3.30 mm and 3.23 mm flats
• Intended use: Travelling mechanics, cycle tourists and workshop owners working with different wheels

Unior was founded in 1919 in Zreče, in present-day Slovenia, where it is still based. For bicycle care, it makes tools, repair stands and wheel equipment. Its name, adopted in the 1970s, comes from the expression “universal tools” and reflects its roots in metalworking.