Unior 1621/1BI-US 14 x 15 mm Ratcheting Bottom Bracket Wrench

The Unior 1621/1BI-US ratchet wrench has two heads, 14 mm and 15 mm. It is used to remove and fit crankset bolts on older bikes, even in tight spaces.

• Two sizes in one tool: 14 mm and 15 mm on opposite heads
• Work in tight spaces without changing tools thanks to the 75-tooth ratchet
• Fine ratchet: approximately 4.8° of movement per tooth
• Premium Flex Plus carbon steel, hardened and tempered for durability
• Suitable for older road and city bikes with square-taper bottom brackets

Technical specifications

• Model: 1621-1 (14 mm + 15 mm version)
• SKU/MPN code: 624942
• Material: Premium Flex Plus carbon steel, hardened and tempered
• Wrench sizes: 14 mm and 15 mm on opposite heads
• Drive: 3/8" square
• Ratchet: 75 teeth (approximately 4.8° per tooth)
• Package contents: Double-headed ratchet wrench

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.