Cobi Small Army kit Challenger II British battle tank, developed and built by Vickers Defense Systems as a successor to the Challenger I entry service in 1998. Although visually similar to the Challenger I, the Challenger II has many new and different features. Cobi-blocks are 100% compatible with all leading brands of building blocks, such as LEGO and Sluban Specifications: Model Small Army 2614 Colour: green Gender: junior Material: ABS Dimensions: 335 x 130 x 105 mm (L x W x H) Age: from 3 years old Content: 625 Blocks 1 Soldier figure Accessories