Kryptonite Bicycle Security Gravity WheelNutz Bike Lock (M10)
Gravity locking system that secures to your front wheel Easy installation - only requires a 15mm wrench (No keys) WheelNutz provide internal lock-out function and can only be removed by turning the bike upside down 180 degrees. Use in tandem with Messenger Mini to create a complete locking solution for your bike. Weather protective coating keeps WheelNutz from corroding. In addition to popular M9 thread - M10 (001775) and 3/8 (001782) also available. Product weight: .17 lbs. (.77kgs). Only 81 grams per set.