●【DIMENSIONS】The inner size of our stained glass hand foiler for copper foil tape is about 6mm, you can use 1/4" or 7/32" copper foil tape. ●【2-IN-1 STAINED GLASS HAND FOILER & BURNISHER】Great for adding foil, keeps foil even when applying to glass piece, also good for rolling foil around the edges of the glass. ●【EASY TO USE】 Our hand foiler is designed with comfort in mind, the ergonomic handle provides a secure grip, reducing hand fatigue during extended crafting sessions. ●【QUALITY GUARANTEED & CUSTOMER SERVICE】1 year guaranteed, if there is any quality issue, please feel free to contact us, we will solve it asap. Thanks.