This wheel comes in packs of 4.
A pair of roller skates will need 2 packs of wheels - make sure you order 2 packs!
 
The Boom Wheels from Atom are back! The wheel technology sets these wheels apart from the rest. The exclusive ‘Power Lip’ technology makes the Boom wheel an all-in-one wheel giving the skater power, speed, grip, agility, and so much more. This innovative formula guarantees maximum grip on multiple surfaces. Atom’s Boom wheel is the universal wheel, giving desired results on every surface. Sold in packs of 4. 
X-Firm:  Green
59mm x 38mm
The  Atom BOOM Wheels are the fastest hybrid wheel you can get on the market. BOOM!