mobarel - 28mm (1-7/64") Jaw openning Width Light Stubby Adj.Wrench SUPER THIN HEAD - Allows It to be Used in a Limited and Narrow Space. 28mm one & 53mm one MEASURED BY BOTH METRIC & SAE DEEP JAW THROAT, Up to 30% Higher than Ordinary Wrenches SHORT ADJUST BOLT - Not Excessing the Jaw Body SMALLER ANGLE - 15 Jaw to Handle Aligns the Wrench in a Manner of Speed Fastening, Precision, Ergonomic Comfort