... angle can be adustable 3,V groove Purpose And PerformanceGrooving Machine for cardboard slot1,Environmental protection, no noise and no dust ... .2,Effect:The groove is very smoothly.3,Convenience:this machine is very easy operation, you can put in any place ... , and no need using cleaner and air compressor machine. Parameter of the groove machine Type LS-1200A Number of slots(most ) 8slots ...