Check out LEGO mallet / hammer - black at Extra Extra Bricks online store. Fast shipping. Great service. Come on in!
FYI: This is basically the same hammer the contestants use in LEGO
LEGO mallet / hammer - black - Extra Extra Bricks
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Ulanlan Building Block Tool Kit is Compatible with Lego Blocks and Technic. The Kits are Specially Designed for People Who Likes Blocks to Efficiently
Ulanlan Separator Tools Compatible with Lego Blocks and Technic, Building Block Tool Kit, Including 1 Multi use Hammer,1 Blocks Pliers, 1 Clip and 2
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Minifigure, Utensil Tool Mallet / Hammer : Part 4522