LEGO Technic Link Tread - SEALED BAG of 58 Chain Links 3873 15379 Mindstorm
58 x Black Chain Links, Part: 3873 15379 (Mindstorm). LEGO Technic Link Tread - SEALED BAG of 58 links. This is for one factory sealed bag of Technic Link treads which has been removed from a new Snow Groom er set (42148).