The QEP J Groover Front Blade is 4mm and is used for grooving sheet vinyl seams in preparation for heat welding with PVCweld rod. Fits the QEP 10-JGROOVER.

• Grooves vinyl seam with consistant width
• 4mm grooving width suits most PVC weld rod diameters
• Easy to fit
• Suits round shaped PVC weld ods