Double your metal or pure

This is based off of Luck.
Play at your own Risk.

Rules:You Give trade Metal to me and at random from a number from 1-10 you choose a number and if you get that number you get Double from what you put in at first. Works well with metal and pure. If done with hats or items you will get Double it, but in metal back.

Scrap:1-10
http://gtm.you1.cn/profiles/76561198218429696/inventory/#440_2_3850589150
Reclaimed:1-7
http://gtm.you1.cn/profiles/76561198218429696/inventory/#440_2_3850613225
Refined:1-5
http://gtm.you1.cn/profiles/76561198218429696/inventory/#440_2_3838354787
Key:1-2
http://gtm.you1.cn/id/CrazyShpee/inventory/#440_2_3727588364