... varied gears, spline shaft and deformed work pieces 2:Cutter's soldering 3:Annealing and diathemizing for metal materials 4 ... wrenches, hammers, axes, screwdrivers, scissors (gardening shears) and so the quenchingAuto Parts quenching various automotive, motorcycle accessories. ... quenchingvarious hardware metal parts, machining parts. Such as axle and gear (sprocket), cam, chuck, fixture, etc. ...