The Trimax MAX40YL is a short shackle motorcycle disc and cable U-lock with yellow sleeve over chrome-plated steel shackle. Trimax cable U-locks are simply the strongest short shackle locks you can buy. The MAX40 is ideal when combined with a Trimax cable or chain for securing motorcycles, bicycles, spare tires, ATVs, marine trailers, and much more. The tough polymer outer skin absorbs hammer strikes and reduces marring and scratching.• 1/2" dia. shackle• Yellow sleeve to protect from scratches• 2" x 1.7" usable space Ideal when combined with a Trimax cable or chain for securing trailers & more Polymer outer skin absorbs hammer strikes & reduces marring & scratching 2"" x 1.7"" of usable space | Trimax MAX40YL High-Security Disc U-Lock, Yellow with 2" x 1/2" Shackle