$99.99
Knex Stem With Price History Tracking
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KID KNEX TRANSPORTATION
$39.99
KNEX BRIDGES
Knex Stem
$39.99
KNEX GEARS
Knex Stem
$39.99
KNEX WHEELS & AXLES AND INCLINED
Knex Stem
$39.99
KNEX LEVERS AND PULLEYS
Knex Stem
$4.50
Felt Heart Stems
Knex Stem
$27.99
Quarks - STEM Engineering Building Toys
Knex Stem
$29.99
$34.99
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$5.00
Knex Mega Motorcycle Building Set
Knex Stem
$12.48
SUPER COLOSSAL STEMS ASSORTED 12/PK
Knex Stem
$19.99
UGears STEM LAB Curvimeter
Knex Stem
$79.95
Animal Jump Off Stem
Knex Stem
$34.99
KNEX Classics Motorized Building Set
Knex Stem
$20.00
$49.95
Explore Science Rumblin' Robots - STEM
Knex Stem
$18.00
$64.87
STEM Sensations Grand Gift Bundle*
Knex Stem
$60.00
$115.98
Cst top load stem pink
Knex Stem
$145.99
ELF TOP LOAD STEM BLACK
Knex Stem
$13.99
DIY Jeep Wooden STEM Kit
Knex Stem
$180.00
KNEX FORT DIY CLUBHOUSE 90 PCE
Knex Stem
$4.99
STEM Basics: Shoelaces - 10 count
Knex Stem
$4.99
STEM Basics: Craft Sticks - 250 Count
Knex Stem
$11.95
$46.00
$264.99
Blue 6" Fixed Stem
Knex Stem
$3.00
Dinosaur STEM Challenge Cards
Knex Stem
$185.00
Illadelph Glass Cotton Candy OG Stem
Knex Stem
$76.99
Roto Rocket STEM Kit
Knex Stem
$76.99
Tri-Flyer STEM Kit
Knex Stem
$76.99
Roto Rocket STEM Kit
Knex Stem
$76.99
Tri-Flyer STEM Kit
Knex Stem
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