8 Pc GrooveLock Pliers Sets, GrooveLock, Linesman, Long Nose, Diagonal, SlipJoint ORS NASCO Power Blast Technology™ high speed Power Blast Technology™ high speed blasting along the cutting edge strengthens the blade to reduce breaks and increase durability Patented T2™ Technology reduces cutting forces on each tooth and optimizes chip removal to allow efficient cutting in the widest range of materials Measurement scales (in square and hex shapes More groove positions provide the optimum hand location for a better grip on the work piece ProTouch™ grips provide extra comfort and reduces hand fatigue Ratcheting action allows GrooveLock to be adjusted from the open position up to the work piece by pushing the handle up no need to press the button Press and slide button quickly adjusts lower jaw All purpose jaw grips on round