The Onguard 8013M Bulldog Medium U-Lock features a X2P Double Bolt Locking Mechanism locks shackle on both sides, NEW Z-Cylinder is bump-proof and resists picking, pulling and drilling,
Hefty 13mm hardened steel shackle resists cutting, prying and jacking, Rounded design and centered keyway eliminates pry points. The Onguard 8013M Bulldog Medium U-Lock's double rubber-coated shackle protects your paint and finish. The extra thick molded end caps protect against bumps and hits.
Dimensions: (W x H x Diam) 3.55" x 6.90" x 0.51"