Features:1. Made of high-quality steel, which is strong, anti-abrasive and durable. 2. Designed to be only 3.7mm thick, reaching fasteners in tight clearance without slippage.3. Two sizes for more options with less to carry. 4. Easy to carry.5. Applicable in industries such as bicycle, motorcycle, car repair repairing and maintaining, household, machinery and electric power.Specification:Product material: steelProduct parameter: about 36/40in(14.17/15.75cm), 30/32in(11.81/12.30cm)Product size: about 28*7*0.5cm/11.02*2.76*0.20inProduct weight: about 290gPacking list:Open-end wrench*1