Home Slickdeals LEGO Technic WHACK! 42072 Building Set (135 Pieces) $12 w/ Walmart Pickup... Slickdeals LEGO Technic WHACK! 42072 Building Set (135 Pieces) $12 w/ Walmart Pickup or Prime Shipping By ARCOM - 2 September 2019 109 0 SHARE Facebook Twitter Go to the deal page: LEGO Technic WHACK! 42072 Building Set (135 Pieces) $12 w/ Walmart Pickup or Prime Shipping