Our 1047 Putty Flex polyester glaze has the easy-sanding characteristics of the best finishing glazes on the market, but it's much more flexible. Compared to our old Bumper Glaze product, the Putty Flex has a lower viscosity for excellent smoothness and flow. Spreads to a smooth finish with a fine taper for a quicker feather-edge, it is ready to sand in approximately 20 minutes. Provides an excellent feather-edge with no peel-back.