Beads are acrylic/plastic- and tested lead free. These are not glass or wood. The hole size is approximately 1-2mm, but may vary up/down from color to color! Please note that due to the manufacturing process- some “over spray” from the paint may slightly cover the hole. Simply use a push pin or any semi-sharp small object to unblock the hole from the overspray!
Our .45mm tiger tail wire offered in the findings section of our shop works wonderfully with these beads... as does stretch cord or a product of your choice less than 2mm thick!