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DISCOBLOX Slide Blocks
STD SLIDER/GRIND BLOCKS MID BONES
Roller skate - grind blocks - Bruny Hardcore - Blue – Al's Skate Co
Discoblox Grind Blocks – RollerDerbyHeaven
Discoblox Grind Blocks / Standard / Black - Shop at Roll Skate Studio
Fowsflake Grind Blocks – Rolyo Sk8house
Medium Grind Blocks
Amazon.com : RollerWave Slide Block for Roller Skates - Easy Mounting to Quad Roller Skates for Sliding & Grinding on Rails, Coping, Curbs and More. for Outdoor Skating (Small) : Sports & Outdoors
Slide Blocks on Roller Skates , do you need them ? - YouTube