Amazon has the Kryptonite 152064 New York Standard Bike U-Lock (4" x 8") for $37 with free shipping. Select Amazon as merchant in the right sidebar. Features 16mm hardened Max-Performance steel shackle, 3 keys (1 with high-intensity bulb for after-dark use) and an 11 (out of 12) Kryptonite security ranking. Normally $60+.
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