... High Frequency Energy Saving Induction Hardening Equipment for Shovels 1,Low energy consumption2,High production efficiency3,Easy ... wrenches, hammers, axes, screwdrivers, scissors (gardening shears) and so the quenchingAuto Parts hardening various automotive, motorcycle accessories. ... hardeningvarious hardware metal parts, machining parts. Such as axle and gear (sprocket), cam, chuck, fixture, etc. ...