Grindstone Bolt-On Heartstoppers jammers Sure-Grip DA45 Trucks are a

Sure-Grip DA45 Trucks are a double action

A hybrid indoor/outdoor wheel that uses LED lights that illuminate the tire as you cruise around

whether you're a derby skater that loves to hit the road for extra practice

bringing you outstanding toe stops to hold up to the toughest skating you can throw at them

It is the preferred choice for environments where heavy protection is a must

Grindstone Bolt-On Heartstoppers jammers Sure-Grip DA45 Trucks are aHeart shaped roller skate toe stops! Excellent stopping power, absurdly cute design. Now available in bolt on, for those skates that don't have plates with an adjustable housing. Born and developed in Austin, Texas.