1800 Flex head has 13 locking positions Locking switch 72 teeth needs as little as 50 to move fastener while a regular whech need 300 of sweep space. 150 Offset tradional box end helps reduce swing obstacles and to minimize knuckle fatiguee. Chrome vanadium steel (CRV) for high durability Professional plating prevents wrenches from corrosion Superior life-time test
