We had a customer describe this tool as a "game changer"
The rounded rims help start the shaping qiucker and easier , the depth of the cones can be used start "Vortex" marbles as well as the top of the moulds rounded your marbles.
Sizes of the cones are
40mm dia x 35mm deep
35mm dia x 28mm deep
30mm dia x 25mm deep
25mm dia x 23mm deep
