World Champion ACER Racing 1/4x1/2x3/16 Stainless Steel Spinner Ball Bearings also known as a size R188 bearing

Highly Polished 100% Stainless Construction & Mirror Smooth Stainless Balls (10 balls) by ACER Racing. Same design and construction as our ceramic R188 fidget spinner bearings except this version uses stainless steel balls.

Price is for 2 bearings as shown. No seals and no lube for fastest spin times.

Inner diameter: 1/4"

Outer diameter: 1/2"

Width: 3/16"

From the leaders in fidget spinner bearing technology: ACER Racing 

The fastest fidget spinner bearings or your money back!

NOTE:  THERE ARE MANY COUNTERFEIT ACER RACING BEARINGS ON THE MARKET CLAIMING TO BE OURS. ONLY THOSE SOLD & SHIPPED BY US ARE GUARANTEED TO BE GENUINE.