Stained Glass Supplies and Tools, 4 Pcs 12" x 12" Stained Glass Work Surface, 12 Pcs 12" Layout Blocks For Stained Glass Panels, 100 Pcs Push Pins Stained Glass Work Surface Is Perfect For Cutting Glass, Assembling And Soldering. Soft But Rigid Material, Works Well With Layout Blocks And Either Push Pins. Multiple Work Surface Can Be Freely Spliced Together To Form A Large Work Surface, Allow You To Work On Multiple Projects At Once. The Layout Blocks Is Made Of Silicone, Can Be Used For A Long Time, With Push Pins Can Help You Fix The Position Of The Stained Glass Project Very Well. The Layout Blocks Is 12 Inch, To Cut Off, Suitable For Most Sizes Of Workbenches. To Bend, Easy For You To Layout Of Straight Lines Or Any Degree Angles. The Stained Glass Kit Package Includes 4 Pcs 12" x 12" x 0.5" Stained Glass Work Surface, 12 Pcs 12" Layout Block System For Stained Glass Panels, 100 Pcs Mixed Color Push Pins.