Unior 1621/1ABI-US 14 x 8 mm Ratcheting Bottom Bracket Wrench

The Unior 1621/1ABI-US ratchet wrench has two heads, 14 mm and 8 mm, and is designed for crank maintenance in the workshop. It is suitable for traditional square-taper crank bolts, ISIS/Octalink and other fasteners with a M8 hex fitting.

• Two sizes in one tool: 14 mm socket and 8 mm hex bit
• 75-tooth ratchet, approximately 4.8° per tooth, for working with small movements
• Suitable for square-taper, ISIS and Octalink crank bolts, with a 3/8" square drive
• Hardened and tempered carbon steel with a chrome finish for workshop use

Technical specifications

• Model: 1621-1 (14 mm + 8 mm version)
• Manufacturer code (MPN): 624943
• Material: Hardened and tempered carbon steel
• Finish: Trivalent chrome plating
• 14 mm end: 14 mm hex socket
• 8 mm end: 8 mm hex bit
• Drive: 3/8" square
• Ratchet: 75 teeth (approximately 4.8° per tooth)
• Package contents: Double-headed ratchet wrench
• Intended use: Crank maintenance: traditional square-taper crank bolts, ISIS/Octalink and fasteners with a M8 hex fitting

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.