Mat cutter Blades C&H , All Framing Needs by Carina Picture Frame Since 1989 SE: SINGLE EDGE 100 blades per box 1200 and 1500 double edge 1200SE and 1500SE single edge Mat cutter Blades C&H blades$39.50 Blades: 1200SE1500SE1200(+$1.50)1500(+$1.50) E-mail:  123frame@123frame.net