<p>This is the Classic 99 Skateboard Wheels by Spitfire. Size is 52.</p><p>Shaped and designed for function and speed, the classic wheel is a great overall wheel for any style of skating. You can't go wrong with Spitfire who have been devoted to making great wheels since 1986.</p><div class="product-info-expander-header js-expander-header"><strong>FEATURES</strong></div><div class="product-info-expander-subs js-expander-subs"><div class="product-features-summary"><div class="product-features-summary-half product-features-summary-first-half"><div class="product-features-summary-spec"><div class="product-features-summary-spec-name">Quantity:<span> </span>Set of 4 Wheels</div></div><div class="product-features-summary-spec"><div class="product-features-summary-spec-name">Wheel Profile:<span> </span>Medium</div></div><div class="product-features-summary-spec"><div class="product-features-summary-spec-name">Surface:<span> </span>Treaded</div></div></div><span> </span><div class="product-features-summary-half"><div class="product-features-summary-spec"><div class="product-features-summary-spec-name">Key Features</div><div class="product-features-summary-spec-values"><ul class="product-features-summary-value-list"><li>Hand Poured</li><li>100% Made in the USA</li><li>Guaranteed Against Defects</li></ul></div></div><div class="product-features-summary-spec"><div class="product-features-summary-spec-name">Durometer:<span> </span>99a</div><div class="product-features-summary-spec-name"><br></div><div class="product-features-summary-spec-name"><meta charset="utf-8"><div id="product-info-section-features" class="js-expander-group expanded"><div class="product-info-expander-subs js-expander-subs"><div class="product-features-details"><div class="product-features-details-spec"><div class="product-features-details-spec-name">WHEEL PROFILE</div><div class="product-features-details-spec-value"><div class="product-features-spec-value-name-and-description"><p><span class="product-features-spec-value-name">Medium -<span> </span></span>Your classic wheel shape, versatile all-around wheel for street/park skating.</p></div></div></div><div class="product-features-details-spec"><div class="product-features-details-spec-name">SURFACE</div><div class="product-features-details-spec-value"><div class="product-features-spec-value-name-and-description"><p><span class="product-features-spec-value-name">Treaded -<span> </span></span>Treaded wheels come with tiny grooves on the riding surface that wear away quickly.</p></div></div></div><div class="product-features-details-spec"><div class="product-features-details-spec-name">DUROMETER</div><div class="product-features-details-spec-value"><div class="product-features-spec-value-name-and-description"><p><span class="product-features-spec-value-name">99a -<span> </span></span>Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.</p></div></div></div></div></div></div><div id="product-info-section-specs" class="js-expander-group expanded"><div class="product-features-specs-tables-title product-info-expander-header js-expander-header">SPECS</div><div class="product-info-expander-subs js-expander-subs"><div class="product-features-specs-table"><table><thead><tr><th>SIZE</th><th>52MM</th><th>53MM</th><th>54MM</th><th>56MM</th></tr></thead><tbody><tr><th><span data-s="1561">DIAMETER (MM):<i class="product-features-popup"></i></span></th><td><span class="product-features-specs-table-spec-value">52.0</span></td><td><span class="product-features-specs-table-spec-value">53.0</span></td><td><span class="product-features-specs-table-spec-value">54.0</span></td><td><span class="product-features-specs-table-spec-value">56.0</span></td></tr><tr><th><span data-s="1560">WIDTH (MM):<i class="product-features-popup"></i></span></th><td><span class="product-features-specs-table-spec-value">32.0</span></td><td><span class="product-features-specs-table-spec-value">33.0</span></td><td><span class="product-features-specs-table-spec-value">33.6</span></td><td><span class="product-features-specs-table-spec-value">35.5</span></td></tr><tr><th><span data-s="1559">RIDING SURFACE (MM):<i class="product-features-popup"></i></span></th><td><span class="product-features-specs-table-spec-value">15.0</span></td><td><span class="product-features-specs-table-spec-value">16.0</span></td><td><span class="product-features-specs-table-spec-value">16.5</span></td><td><span class="product-features-specs-table-spec-value">17.7</span></td></tr><tr><th><span data-s="2206">SUGGESTED RISER SIZE (IN):<i class="product-features-popup"></i></span></th><td><span class="product-features-specs-table-spec-value">N/A</span></td><td><span class="product-features-specs-table-spec-value">N/A</span></td><td><span class="product-features-specs-table-spec-value">N/A</span></td><td><span class="product-features-specs-table-spec-value">1/8</span></td></tr></tbody></table></div></div></div></div></div></div></div><div class="product-features-details"><div class="product-features-details-spec"></div></div></div>