Midwest Products Amazing Mosaics Tile Nippers Tile Nippers are a handy tool for cutting your mosaic tiles just the right size and shape for all of your mosaic projects Also handy for breaking and shaping stained glass and china PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Tile Nippers are a handy tool for cutting your mosaic tiles just the right size and shape for all of your mosaic projects Also handy for breaking and shaping stained glass and china PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.